642:
1826:
2036:
830:
408:
2100:
469:
641:
822:
4849:
4141:
2070:
1012:
634:
4873:
1850:
4861:
4170:
416:
993:, an APR with a P100 classification would be at least 99.97% efficient at removing particles of this size. Particles with a size both less than and greater than 0.3 μm may be filtered at an efficiency greater than 99.97%. However, this may not always be the case, as the most penetrating particle size for N95s was measured to be below 0.1 μm, as opposed to the predicted size of between 0.1 and 0.3 μm.
44:
464:
436:
474:
606:, these standards were merely advisory, as the USBM had no enforcement power at the time. After the disaster, an explicit approval program was established in 1934, along with the introduction of combination Type A/B/C respirator ratings, corresponding to Dusts/Fumes/Mists respectively, with Type D blocking all three.
837:
Under the current revision of Part 84 established in 1995, NIOSH established nine classifications of approved particulate filtering respirators based on a combination of the respirator series and efficiency level. The first part of the filter's classification indicates the series using the letters N,
1019:
Under 42 CFR 84, chemical cartridges and gas mask canisters are defined separately. Use of the TC-14G canister schedule or the TC-23C chemical cartridge schedule for a given respirator depends on whether "acid gas" is a designated contaminant, which is designated for gas mask canisters only, or if
798:
30 CFR 11. On July 10, 1995, in response to respirators exhibiting "low initial efficiency levels", new 42 CFR 84 standards, including the N95 standard, were enforced under a three-year transition period, ending on July 1, 1998. The standard for N95 respirators includes, but is not limited to, a
679:
NIOSH was concerned about users choosing inappropriate respirators, like confusion over choosing 'dust/mist' or 'dust/fume/mist' respirators with regards to particle penetration, so proposed Part 84 rules in 1994 dropped the contaminant/HEPA classification for most respirators in favor of three
1833:
For particulate respirators, while NIOSH designates P100 as filter cartridges that can use the "magenta" color, ANSI designates P100 as "purple", a color which can be seen on some P100 filter cartridges. In addition, the 2001 revision to ANSI K13.1-1973 provides exclusive colors to be used for
1027:
K13.1-1973. A TB guide, published by NIOSH in 1999, describes 13 combinations of contaminants with unique color markings. The definitive guide from ANSI, who, since the passage of 42 CFR 84 in 1995, has published a 2001 revision of K13.1-1973, named Z88.7-2001, describes 14 combinations of
602:(USBM). An example of an early respirator standard, Type A, established in 1926, was intended to protect against mechanically generated dusts produced in mines. These standards were intended to obviate miner deaths, noted to have reached 3,243 by 1907. However, prior to the
2091:
456:
446:
2147:
2000:
TC-21C respirator approval numbers for negative-pressure particulate respirators have three digits, in the form: TC-21C-###, while TC-84A respirator approval numbers have four digits, in the form: TC-84A-####. 42 CFR 84 did not change regulation regarding
575:
It is illegal in the United States to use filtration terms coined under 42 CFR 84, or mark masks with the word 'NIOSH' without the approval of NIOSH. Information about approved respirators can be found in the NIOSH certified equipment list (CEL).
838:
R, or P to indicate the filter's resistance to filtration efficiency degradation when exposed to oil-based or oil-like aerosols (e.g., lubricants, cutting fluids, glycerine, etc.). Definitions and intended use for each series is indicated below.
2082:
441:
973:
type filters, an indefinite amount of DOP is used until filtration efficiency stabilizes. P100 filters, under 42 CFR part 84, are the only filters permitted to be magenta in color. HE (high-efficiency) labeled filters are only provided for
571:, filed a trademark application on June 17, 2020 for various 42 CFR 84 trademarks, including the N95, allowing NIOSH to enforce rules on counterfeit masks outside of rules defined in 42 CFR 84. The trademarks were registered in 2022.
3173:
882:
The second value indicates the minimum efficiency level of the filter. When tested according to the protocol established by NIOSH each filter classification must demonstrate the minimum efficiency level indicated below.
292:
550:, not the air-purifying respirator's ability to remove chemical gasses and vapors from air, which is regulated under 42 CFR 84 Subpart L. For chemical classifications, NIOSH, under 42 CFR 84, partially defers to
2617:
2101:
Announcement of Public
Meeting to Discuss Potential Standards or Guidelines for Respiratory Protective Devices Used to Protect Emergency Response Workers Against Chemical, Biological, and Radiological Agents
1028:
contaminants with unique color markings, based on 13 out of the 28 NIOSH Protection
Designations. The ANSI standard also notes that these classifications do not apply in aviation or military respirators.
3811:
3746:
806:
Once 42 CFR 84 was in effect, MSHA, under a proposed rule change to 30 CFR 11, 70, and 71, would withdraw from the approval process of rated respirators (outside of respirators used for mining).
653:
and NIOSH approved respirators under 30 CFR 11. Non-powered respirator filters were classified based on their design against a contaminant, including substances like 'dusts', 'fumes', 'mists',
2815:
1023:
42 CFR 84 Subsection L describes seven types of chemical cartridge respirators with maximum use concentrations and penetration, noting that colors and markings are definitively based off of
2393:"DEPARTMENT OF HEALTH AND HUMAN SERVICES Centers for Disease Control and Prevention Guidelines for Preventing the Transmission of Mycobacterium Tuberculosis in Health-Care Facilities, 1994"
624:, establishing NIOSH, as well as other regulations established around the time, reshuffled regulatory authority for respirators, but nonetheless continued the use of USBM-era regulations.
2755:. U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health. September 1999.
2852:
3166:
3433:
680:
specifications, Type A, B and C, each representing filtration of 99.97%, 99%, and 95% respectively, with Type A proposed to be used in place of HEPA for non-powered respirators.
4904:
3011:"Filtering Efficiency of N95- and R95-Type Facepiece Respirators, Dust-Mist Facepiece Respirators, and Surgical Masks Operating in Unipolarly Ionized Indoor Air Environments"
1031:
A comparison table below details the NIOSH protection designations, 42 CFR 84, the Navy/Marine Field Manual, the NIOSH TB guide, and whether they match up with the groups of
135:
451:
2605:
3311:
3254:
2651:
2164:
2069:
4161:
3769:
2148:"From Scarcity to Abundance: Complementary Government and Private Initiatives to Manage the Allocation of N95 Masks in the U.S. During the COVID-19 Pandemic"
524:
188:
68:
2764:
2923:
2399:
3137:
3955:
3740:
621:
249:
2051:
China (GB 2626-2019): Similar testing requirements and grades. Has "KN" and "KP" resistance levels, 90/95/99. Has additional EU-like rules on leakage.
2718:
2436:
4156:
3790:
3752:
2200:
4400:
4174:
3800:
3696:
609:
157:
2126:
1039:, for each type of chemical cartridge is described below. Note that, while the 2001 revision to ANSI K13.1-1973 provides exact colors under the
4061:
506:
3202:
4208:
3764:
3714:
2844:
324:
2946:"NIOSH Guide to the Selection and Use of Particulate Respirators Appendix E: Commonly Asked Questions and Answers About Part 84 Respirators"
3304:
783:
613:
163:
4877:
2332:
NIOSH Recommended
Guidelines for Personal Respiratory Protection of Workers in Health-care Facilities Potentially Exposed to Tuberculosis
1834:
non-P100 cartridge filters, in two categories: oil-resistant (remaining R- and P- NIOSH ratings), and non-oil resistant (all N-ratings).
2953:
2684:
2647:
2613:
567:
During the COVID-19 pandemic, the mask and respirator market rapidly grew, along with counterfeit respirators. NIOSH, on behalf of the
167:
543:(APR) such as filtering facepiece respirators and chemical protective cartridges that have incorporated particulate filter elements.
2987:
2957:
4909:
4145:
3934:
3297:
568:
211:
2688:
535:
in the air. The certification and approval process for respiratory protective devices is governed by Part 84 of Title 42 of the
177:
4121:
3980:
3393:
3033:
554:
ANSI K13.1-1973, and others, for matters such as chemical cartridge color classification. All classifications assume that the
2229:
1024:
787:
650:
617:
551:
206:
173:
72:
4865:
4101:
2480:"DEPARTMENT OF HEALTH AND HUMAN SERVICES Public Health Service 42 CFR Part 84 RIN 0905–AB58 Respiratory Protective Devices"
367:
216:
878:. Used when oil particulates are present and the filter is re-used for more than one shift. Tested with DOP oil particles.
4721:
4444:
3383:
2793:
1015:
Half-face air-purifying respirator with combination P100 particulate filter (magenta) and organic vapor (black) cartridge
669:
and NIOSH literature as shorthand. Non-powered filters were also classified under the HEPA specification, if applicable.
3063:
4318:
4253:
4051:
3250:
1899:
1574:
1561:
1526:
1503:
499:
372:
2639:
4611:
4323:
4230:
4201:
3974:
3964:
3719:
3228:
3098:
2504:
637:
Example Part 11 'HEPA' Label, TC-21C particulate, with approval for dusts, fumes, mists, radionuclides, and asbestos
4771:
4756:
4345:
2461:
2002:
1909:
975:
2749:
2578:
2305:
825:
Example Part 84 Label, TC-84A particulate, with older NIOSH logo, for P100 respirator, equivalent to Part 11 HEPA.
665:
fume. The most popular respirator filters were often referred to as 'DM' (Dust/Mist) or 'DFM' (Dust/Fume/Mist) in
428:
423:
4580:
4507:
4330:
4151:
4016:
3671:
3408:
3320:
2111:
2044:
1904:
2915:
2392:
603:
4395:
3887:
3640:
3128:
2816:"DHHS Pub 96-101 NIOSH Guide to the Selection & Use of Particulate Respirators Certified Under 42 CFR 84"
599:
591:
492:
153:
145:
4853:
4241:
4194:
3929:
3862:
3615:
3403:
1020:
the manufacturer is obligated to list all designated contaminants supported by a given chemical cartridge.
344:
3130:
American
National Standard for Color-Coding of Air Purifying Respirator Canisters, Cartridges, and Filters
2710:
2553:
2429:
4766:
4751:
4423:
3758:
3666:
3630:
3468:
2462:"Differences and Limitations Between Part 11 Particulate Respirators and Part 84 Particulate Respirators"
795:
536:
299:
282:
2579:"CHANGES IN OCCUPATIONAL SAFETY REGS WILL PERMIT BETTER RESPIRATORS TO PROTECT AGAINST DUST AND DISEASE"
1514:
316:
4736:
4662:
4126:
4031:
3805:
3508:
2092:
Differences and
Limitations Between Part 11 Particulate Respirators and Part 84 Particulate Respirators
1047:, as well as cartridge/canister designation, have been omitted to facilitate this fair use comparison:
362:
17:
3279:
447:
Changes in
Occupational Safety Regs Will Permit Better Respirators to Protect Against Dust and Disease
4798:
4493:
3724:
3635:
3620:
3483:
3478:
3453:
2479:
1825:
863:. Used when oil particulates are present and the filter is disposed of after one shift. Tested using
329:
4502:
4476:
4116:
4041:
4021:
3914:
3538:
3528:
3503:
3198:
2214:
2178:
645:
3M 6200 with magenta 'Dust-Fume-Mist
Radionuclides Asbestos' (30 CFR HEPA) markings on the filters
4813:
4781:
4726:
4633:
4549:
4313:
4246:
4086:
3872:
1894:
1637:
NIOSH designation does not exist, no stripe, wrong color, actual color for unlisted combinations
1539:
334:
4899:
4365:
3681:
3661:
3448:
3418:
382:
2829:
Herring Jr., Ronald N. (1997). "42 CFR Part 84: It's time to change respirators... but how?".
2522:
Herring Jr., Ronald N. (1997). "42 CFR Part 84: It's time to change respirators... but how?".
4643:
4621:
4606:
3676:
2290:
531:. The ratings describe the ability of the device to protect the wearer from solid and liquid
969:
type filters, a 200 mg of DOP is used, with a defined service time of "one work shift". For
4914:
4731:
4626:
3877:
3852:
3656:
3573:
3423:
3413:
3373:
3328:
3167:"ndustrial Hygiene Field Operations Manual Technical Manual NMCPHC-TM6290.91-2 10 MAY 2021"
1487:
1040:
387:
8:
4818:
4761:
4529:
4512:
4488:
4434:
4217:
4011:
3894:
3882:
3847:
3625:
3610:
3603:
3583:
3353:
3335:
2539:
NIOSH Guide to the
Selection and Use of Particulate Respirators Certified Under 42 CFR 84
2083:
NIOSH Guide to the
Selection and Use of Particulate Respirators Certified Under 42 CFR 84
2020:
833:
People wearing 3M 2091 magenta P100 filters. Note that these filters do not block vapors.
555:
2979:
2945:
4776:
4616:
4591:
4352:
4046:
3950:
3867:
3686:
2892:
2875:
2845:"Considerations for Optimizing the Supply of Powered Air-Purifying Respirators (PAPRs)"
2369:
2352:
2267:
2250:
2035:
1916:
1868:
1184:
1002:
480:
377:
2005:, so have continued under TC-21C approval, with four digits, in the form TC-21C-####.
1771:
NIOSH designation does not exist, wrong color, actual color for unlisted combinations
4830:
4825:
4808:
4601:
4522:
4306:
4096:
3909:
3588:
3563:
3458:
3443:
2897:
2676:
2374:
2272:
2014:
1888:
1367:
1280:
1253:
864:
407:
4554:
3837:
3832:
3498:
3438:
3025:
3010:
2887:
2756:
2750:"TB Respiratory Protection Program In Health Care Facilities Administrator's Guide"
2711:"OSHA Technical Manual Section 8VII: Chapter 2 Respiratory Protection Appendix 2-4"
2364:
2262:
1864:
is the current regulator of all the respirators in this schedule, under 42 CFR 84.
1382:
1319:
1298:
1138:
829:
3099:"LIST OF NIOSH STANDARD PROTECTIONS, CAUTIONS AND LIMITATIONS FOR APPROVAL LABELS"
4111:
4091:
3919:
3598:
3593:
3548:
3289:
2537:
2330:
2201:"NIOSH Registers Respirator Certification Marks with Patent and Trademark Office"
1199:
850:
800:
661:. 'Dust/Mist' was usually tested with silica, and 'fume' was usually tested with
2043:
A few other jurisdictions use standards similar to the NIOSH scheme to classify
1179:
No stripe, within designation color, but actual color for unlisted combinations
470:
Terrorism and CBRN defense (with SCBAs) meeting by NIOSH, circa March-April 2001
4676:
4483:
4454:
4335:
4076:
4036:
3924:
3904:
3899:
3518:
3398:
2116:
2057:
South Korea (KMOEL - 2017-64): EU grades, KF 80/94/99 for second/first/special
1843:
1818:
For brevity, only combinations that are different from the TB guide are listed.
1460:
1433:
1233:
234:
3070:
3029:
2789:
2554:"DEPARTMENT OF HEALTH AND HUMAN SERVICES Public Health Service 42 CFR Part 84"
2430:"DEPARTMENT OF HEALTH AND HUMAN SERVICES Public Health Service 42 CFR Part 84"
2351:
Spelce, David; Rehak, Timothy R; Meltzer, Richard W; Johnson, James S (2019).
2249:
Spelce, David; Rehak, Timothy R; Meltzer, Richard W; Johnson, James S (2019).
1842:"TC-84A" redirects here. For information on TC-84A N95-class respirators, see
339:
4893:
4716:
4686:
4596:
4517:
4081:
3842:
3543:
3488:
3284:
2640:"Respirator Trusted-Source Information Section 1: NIOSH-Approved Respirators"
1044:
799:
filtration of at least 95% under a 0.3 micrometer 200 milligram test load of
654:
546:
The NIOSH-provided classifications only cover the filtration of particles or
4786:
4638:
4559:
4449:
3996:
3970:
3960:
3553:
3493:
3463:
2901:
2760:
2378:
2276:
1655:
1629:
1243:
950:
908:
712:
673:
532:
277:
2508:
672:
Only 30 CFR 11 HEPA filters were permitted by NIOSH for the prevention of
99:
4803:
4746:
4544:
4539:
4534:
4459:
4439:
4006:
3473:
3368:
3363:
3224:
2465:
2353:"History of U.S. Respirator Approval (Continued) Particulate Respirators"
2251:"History of U.S. Respirator Approval (Continued) Particulate Respirators"
1668:
No stripe needed, combination more than required for color (AG/OV/AM/CO)
1340:
2582:
2230:"The Historic and Cultural Importance of the HAWKS NEST TUNNEL DISASTER"
821:
4793:
4466:
4360:
4283:
4106:
4056:
4026:
4001:
3523:
3513:
3388:
3378:
3358:
3348:
2075:
990:
979:
598:
Prior to the 1970s, respirator standards were under the purview of the
540:
528:
272:
117:
90:
49:
4186:
3747:
Istituto nazionale per l'assicurazione contro gli infortuni sul lavoro
3064:"STANDARD APPLICATION PROCEDURES FOR THE CERTIFICATION OF RESPIRATORS"
1011:
633:
4741:
4681:
4471:
4340:
3827:
3795:
3533:
3343:
2039:
Classic collection efficiency curve with filter collection mechanisms
1760:
Within designation color, but actual color for unlisted combinations
1482:
NIOSH designation does not exist, may use unlisted combination color
1418:
267:
86:
82:
4388:
244:
4301:
4071:
3558:
3428:
2293:. US Department of Labor, US Mine Safety and Health Administration.
1883:
1156:
1091:
1006:
954:
918:
782:
Historically, respirators in the US had generally been approved by
658:
287:
2019:
NIOSH air filtration ratings do not test the fit of a respirator.
996:
539:(42 CFR 84). Respiratory protective devices so classified include
3225:"NIOSH Guide to the Selection and Use of Particulate Respirators"
2950:
The
National Institute for Occupational Safety and Health (NIOSH)
2681:
The National Institute for Occupational Safety and Health (NIOSH)
2677:"NIOSH Guide to the Selection and Use of Particulate Respirators"
1729:
1113:
547:
1871:, the historical regulator of respirators in the United States.
1849:
1035:, per color, in the 42 CFR 84-declared ANSI K13.1-1973 revision
3857:
3199:"Counterfeit Respirators / Misrepresentation of NIOSH Approval"
3009:
Lee, Byung Uk; Yermakov, Mikhail; Grinshpun, Sergey A. (2005).
2980:"CDC - NIOSH Publications and Products - Appendices for 96-101"
2215:"Counterfeit Respirators / Misrepresentation of NIOSH Approval"
2179:"Counterfeit Respirators / Misrepresentation of NIOSH-Approval"
1725:
1679:
No stripe, wrong color, actual color for unlisted combinations
1314:
No stripe, wrong color, actual color for unlisted combinations
415:
2644:
The National Personal Protective Technology Laboratory (NPPTL)
3136:, American Industrial Hygiene Association, ANSI, 3 May 2001,
2606:"42 CFR Part 84 - Approval of Respiratory Protective Devices"
2121:
1861:
887:
NIOSH particulate respirator class minimum efficiency levels
791:
2203:. American Industrial Hygiene Association. 20 January 2022.
2024:
1854:
962:
849:. Used when oil particulates are not present. Tested using
803:. Standards and specifications are also subject to change.
662:
183:
2920:
U.S. National Institute for Occupational Safety and Health
465:
SCBA cylinder advisory following exposure to acidic agents
43:
2350:
2248:
2171:
666:
2244:
2242:
1587:
Respirator combination designation and color comparison
1051:
Respirator/Filter type designation and color comparison
2472:
1738:
Within designation color, but wrong color if exclusive
4292:
4905:
National Institute for Occupational Safety and Health
4229:
3770:
National Institute for Occupational Safety and Health
2239:
978:. HE-marked filters are 99.97% efficient against 0.3
525:
National Institute for Occupational Safety and Health
69:
National Institute for Occupational Safety and Health
4271:
3008:
2546:
1837:
1829:
Person wearing purple 3M 7093 P100 cartridge filters
1718:
Combination more than required for color (CL/HC/SD)
452:
NIOSH Change Will Save Health Care Industry Millions
2916:"Understanding Respiratory Protection Against SARS"
2515:
2306:"Summary of the Occupational Safety and Health Act"
579:
4579:
3956:Occupational Safety and Health Act (United States)
3741:Canadian Centre for Occupational Health and Safety
3319:
2530:
2181:. NIOSH, Centers of Disease Control and Prevention
4891:
3753:National Institute for Safety and Health at Work
4422:
3801:Occupational Safety and Health Convention, 1981
3058:
3056:
3054:
2849:U.S. Centers for Disease Control and Prevention
997:Chemical cartridge and canister classifications
4661:
1801:
1799:
1797:
1795:
1793:
965:is used, with and undefined service time. For
592:N95 respirator § Early US respirator standards
475:Flashover postmortem—with information on SCBAs
4202:
3765:Occupational Safety and Health Administration
3715:European Agency for Safety and Health at Work
3305:
2003:powered-air purifying particulate respirators
500:
3051:
406:
3123:
3121:
3119:
3117:
3115:
3113:
3111:
2828:
2521:
2235:. American Society of Safety Professionals.
2165:"Trademark Status & Document Retrieval"
2078:has original text related to this article:
2008:
1790:
4872:
4209:
4195:
3409:Coalworker's pneumoconiosis ("black lung")
3312:
3298:
3093:
3091:
3089:
3087:
3085:
3083:
2954:Centers for Disease Control and Prevention
2744:
2742:
2740:
2738:
2736:
2685:Centers for Disease Control and Prevention
2648:Centers for Disease Control and Prevention
2614:United States Government Publishing Office
2505:"42 CFR 84 Respiratory Protective Devices"
2291:"Federal Coal Mine and Safety Act of 1969"
811:
622:Occupational Safety and Health Act of 1970
561:
507:
493:
3161:
3159:
3157:
2891:
2368:
2266:
1809:for additional respirator use guidelines.
3108:
2435:. US Federal Register. pp. 26850-26893.
2424:
2422:
2420:
2034:
1848:
1824:
1010:
828:
820:
640:
632:
4216:
3935:Immediately dangerous to life or health
3080:
2880:Canadian Journal of Respiratory Therapy
2873:
2733:
2507:. NIOSH. 25 August 1995. Archived from
2346:
2344:
2342:
949:All respirator types are permitted for
684:(OBSOLETE) 30 CFR 11 efficiency levels
610:Federal Coal Mine Health and Safety Act
569:Department of Health and Human Services
457:Differences Between Part 11 and Part 84
14:
4892:
4122:Workplace hazard controls for COVID-19
3394:Chronic solvent-induced encephalopathy
3154:
2721:from the original on 28 September 2019
2559:. US Federal Register. pp. 26850-26893
2303:
2145:
1706:Navy/Marine Field Manual combinations
1043:, colors and combinations outside the
989:most penetrating particle size of 0.3
527:(NIOSH)'s classification of filtering
4705:
4660:
4578:
4421:
4270:
4228:
4190:
3293:
3231:from the original on 29 February 2020
3179:from the original on 17 February 2024
3069:. NIOSH. January 2001. Archived from
2671:
2669:
2620:from the original on 23 February 2020
2600:
2598:
2596:
2594:
2592:
2464:. NIOSH. 20 June 1996. Archived from
2417:
2227:
1511:
1374:
1225:
985:Since filters are tested against the
73:American National Standards Institute
4860:
4169:
3812:Working Environment Convention, 1977
3280:NIOSH Certified Equipment List (CEL)
3217:
3039:from the original on 20 January 2022
2926:from the original on 6 December 2020
2822:
2770:from the original on 10 October 2022
2581:. NIOSH. 2 June 1995. Archived from
2339:
2146:Joskow, Paul L. (27 February 2022).
2030:
649:Prior to the approval of 42 CFR 84,
419:Related media at Wikimedia Commons:
354:Related topics involving respirators
4722:Breathing performance of regulators
4445:Continuous positive airway pressure
3981:Workers' right to access the toilet
2855:from the original on 6 January 2023
2691:from the original on 11 August 2019
2054:Mexico (NOM-116-2009): Same grades.
1806:
112:This article is part of a series on
24:
4319:Self-contained breathing apparatus
4254:Mountaineering breathing apparatus
4052:International Chemical Safety Card
2837:
2666:
2589:
2485:. US Federal Register. 8 June 1995
373:Self-contained breathing apparatus
25:
4926:
4612:Surface-supplied diving equipment
4324:Self-contained self-rescue device
4231:High altitude breathing apparatus
4062:National Day of Mourning (Canada)
3720:International Labour Organization
3273:
3257:from the original on 15 June 2024
3205:from the original on 13 July 2024
2990:from the original on 20 June 2019
2960:from the original on 20 June 2019
2796:from the original on 20 June 2024
2654:from the original on 16 June 2019
1838:Table of TC/BM approval schedules
1611:1999 NIOSH TB Guide combinations
1071:Penetration allowed by 42 CFR 84
976:powered air-purifying respirators
584:
259:Diseases mitigated by respirators
4871:
4859:
4848:
4847:
4772:Respiratory protective equipment
4757:Open circuit breathing apparatus
4346:Powered air-purifying respirator
4272:Occupational breathing apparatus
4168:
4140:
4139:
3201:. CDC NIOSH NPPTL. 23 May 2024.
3018:Aerosol and Air Quality Research
2405:from the original on 8 June 2024
2068:
1515:Atmosphere-supplying respirators
1220:Chlorobenzylidene malononitrile
1068:42 CFR 84 max use concentration
590:This section is an excerpt from
580:Early NIOSH/USBM classifications
414:
42:
3243:
3191:
3143:from the original on 2 May 2022
3002:
2972:
2938:
2908:
2867:
2808:
2790:"NIOSH Pocket Guide - Asbestos"
2782:
2703:
2632:
2571:
2497:
2454:
2442:from the original on 8 May 2024
2385:
2323:
2304:US EPA, OP (22 February 2013).
2015:Respirator § Disadvantages
1812:
1513:Non-air-purifying respirators (
961:type filters, a 200 mg load of
4910:Occupational safety and health
4581:Underwater breathing apparatus
4508:Respiratory gas humidification
4282:
4017:Environment, health and safety
3672:Occupational health psychology
3321:Occupational safety and health
2874:Vanessa, Roberts (Fall 2014).
2297:
2283:
2221:
2207:
2193:
2157:
2139:
2112:Division of Industrial Hygiene
1311:White, with 1/2" green stripe
982:particles and are oil-proof.
953:. Class-100 filters can block
740:Replaceable Dust/Mist filters
481:Image on left: User seal check
13:
1:
3888:Personal protective equipment
3641:Workplace health surveillance
2132:
2127:European respirator standards
2045:mechanical filter respirators
1676:Green with 1/2" white stripe
1658:/ radionuclides/ particulate
1634:Yellow with 1/2" blue stripe
1033:NIOSH protection designations
775:
723:Single-use Dust/Mist filters
556:respirator is properly fitted
4242:Aviation breathing apparatus
3930:Standard operating procedure
3863:Hierarchy of hazard controls
3616:Hierarchy of hazard controls
1648:Yes, under 30 CFR 11 'HEPA'
1550:Supplied-air Abrasive Blast
816:
628:
345:Hierarchy of hazard controls
7:
4767:Positive pressure breathing
4752:Negative pressure breathing
4706:
4424:Medical breathing apparatus
4067:NIOSH air filtration rating
3759:Health and Safety Executive
3667:Occupational health nursing
3631:Occupational exposure limit
3469:Hospital-acquired infection
3434:Exposure to human nail dust
3227:. CDC NIOSH. January 1996.
2061:
1603:Correlated with Z88.7-2001
1455:In standard as combination
1332:In standard as combination
1293:In standard as combination
1275:In standard as combination
1151:In standard as combination
1083:Correlated with Z88.7-2001
537:Code of Federal Regulations
521:NIOSH air filtration rating
36:NIOSH air filtration rating
10:
4931:
4737:Escape breathing apparatus
4663:User respiratory interface
4401:GB2626 (China), and others
4127:Workplace health promotion
4032:Hawks Nest Tunnel disaster
3806:Worker Protection Standard
3509:Noise-induced hearing loss
2717:(TED 01-00-015 ed.).
2012:
1841:
1000:
604:Hawks Nest Tunnel Disaster
589:
552:American National Standard
363:Hawks Nest Tunnel Disaster
48:A filtering facepiece N95
27:U.S. rating of respirators
4843:
4799:Closed circuit rebreather
4712:
4701:
4669:
4656:
4587:
4574:
4494:Built-in breathing system
4430:
4417:
4396:EN 149/14683/143 (Europe)
4384:42 CFR 84 (United States)
4376:
4290:
4281:
4277:
4266:
4237:
4224:
4135:
3989:
3943:
3820:
3783:
3733:
3725:World Health Organization
3707:
3695:
3649:
3636:Occupational epidemiology
3621:Prevention through design
3572:
3479:Laboratory animal allergy
3404:Chimney sweeps' carcinoma
3379:Byssinosis ("brown lung")
3327:
3030:10.4209/aaqr.2005.06.0003
2876:"To PAPR or Not to PAPR?"
1705:
1610:
1494:
1425:
1362:In standard with ammonia
1326:
1305:
1287:
1206:
1191:
1145:
1099:
926:
914:
737:158.4 mg, usually silica
541:air-purifying respirators
96:
78:
64:
56:
41:
34:
4503:Positive airway pressure
4477:Non-invasive ventilation
4042:Hostile work environment
4022:Environmental toxicology
3915:Redundancy (engineering)
3529:Repetitive strain injury
2009:NIOSH rating limitations
1701:Yes, for canisters only
1690:Yes, for canisters only
1616:chemicals/ Particulates
1108:Yes, for canisters only
317:N95 use during pandemics
4814:Carbon dioxide scrubber
4782:Constant flow regulator
4634:Atmospheric diving suit
4550:Partial rebreather mask
4314:Supplied-air respirator
4247:Emergency oxygen system
4087:Quality of working life
3873:Administrative controls
2398:. US Federal Register.
1853:Firefighter wearing an
1623:Wrong color, no stripe
1605:(K13.1-1973 revision)?
1085:(K13.1-1973 revision)?
812:Current classifications
562:NIOSH ratings trademark
429:Category:30 CFR Part 11
424:Category:42 CFR Part 84
325:Counterfeit respirators
4366:Elastomeric respirator
4331:Particulate respirator
3682:Occupational therapist
3662:Industrial engineering
3454:Glassblower's cataract
3419:Decompression sickness
2761:10.26616/NIOSHPUB99143
2040:
1858:
1830:
1016:
915:NaCl (N) or DOP (R,P)
834:
826:
646:
638:
411:
4644:Helium reclaim system
4622:Helicopter escape set
4607:Full-face diving mask
4152:Occupational diseases
4117:Workers' compensation
3677:Occupational medicine
3539:Silo-filler's disease
3504:Mule spinners' cancer
2357:J Int Soc Respir Prot
2255:J Int Soc Respir Prot
2038:
1852:
1828:
1743:"Basic gases": AM/MA
1014:
940:N100, R100, P100, HE
832:
824:
644:
636:
410:
226:Respirator regulation
198:Non-government bodies
4732:Emergency gas supply
4627:Submarine escape set
3878:Engineering controls
3853:Emergency evacuation
3657:Environmental health
3424:De Quervain syndrome
3414:Concussions in sport
3253:. 28 December 2021.
2585:on 31 December 1996.
2511:on 30 December 1996.
2468:on 31 December 1996.
2228:Howard W., Spencer.
1867:'BM' stands for the
1488:Toluene diisocyanate
1077:1999 NIOSH TB Guide
1041:Munsell Color System
867:(DOP) oil particles.
759:Dust/Mist approval)
4819:Semi-closed circuit
4762:Oxygen concentrator
4530:Non-rebreather mask
4513:Supplemental oxygen
4489:Hyperbaric medicine
4435:Anaesthetic machine
4218:Breathing apparatus
4012:Effects of overtime
3895:Job safety analysis
3883:Hazard substitution
3848:Emergency procedure
3626:Exposure assessment
3611:Occupational stress
3604:Psychosocial hazard
3584:Occupational hazard
3449:Flock worker's lung
2986:. 16 October 2018.
2650:. 29 January 2018.
2616:. 6 February 2020.
1971:42 CFR 84 (enacted)
1876:
1875:Approval schedules
1653:AG/HN/CL/OV/AM/CO/
1588:
1175:1/2" yellow stripe
1052:
888:
847:ot resistant to oil
685:
4777:Pressure regulator
4592:Open-circuit scuba
4353:Chemical cartridge
4047:Indoor air quality
3951:Diving regulations
3868:Hazard elimination
3687:Safety engineering
3285:NIOSH Pocket Guide
2041:
1874:
1869:US Bureau of Mines
1859:
1831:
1807:NIOSH pocket guide
1723:"Organic Vapors":
1711:CL/CD/HS/HC/SD/HF
1586:
1185:Chloroacetophenone
1050:
1017:
1003:Chemical cartridge
886:
835:
827:
796:federal regulation
683:
647:
639:
600:US Bureau of Mines
412:
378:Chemical cartridge
4887:
4886:
4839:
4838:
4831:Escape respirator
4826:Work of breathing
4809:Oxygen rebreather
4697:
4696:
4652:
4651:
4602:Diving rebreather
4570:
4569:
4523:Reservoir cannula
4413:
4412:
4409:
4408:
4262:
4261:
4184:
4183:
4097:Safety data sheet
3910:Operations manual
3791:Bangladesh Accord
3779:
3778:
3589:Biological hazard
3076:on 19 March 2003.
2851:. 19 April 2020.
2833:. pp. 14–23.
2831:Engineer's Digest
2526:. pp. 14–23.
2524:Engineer's Digest
2031:Similar standards
1998:
1997:
1786:
1785:
1664:1/2" gray stripe
1594:NIOSH protection
1584:
1583:
1281:Hydrogen fluoride
1254:Hydrogen chloride
1074:Efficiency level
1062:NIOSH protection
1056:NIOSH protection
947:
946:
903:Efficiency Level
865:dioctyl phthalate
773:
772:
706:Efficiency Level
700:Dust Penetration
517:
516:
461:For firefighters:
402:
138:agencies involved
127:
122:
107:
106:
16:(Redirected from
4922:
4875:
4874:
4863:
4862:
4851:
4850:
4703:
4702:
4658:
4657:
4576:
4575:
4555:Simple face mask
4419:
4418:
4279:
4278:
4268:
4267:
4226:
4225:
4211:
4204:
4197:
4188:
4187:
4172:
4171:
4143:
4142:
3838:Contingency plan
3833:Code of practice
3705:
3704:
3499:Metal fume fever
3314:
3307:
3300:
3291:
3290:
3267:
3266:
3264:
3262:
3247:
3241:
3240:
3238:
3236:
3221:
3215:
3214:
3212:
3210:
3195:
3189:
3188:
3186:
3184:
3178:
3171:
3163:
3152:
3151:
3150:
3148:
3142:
3135:
3125:
3106:
3105:
3103:
3095:
3078:
3077:
3075:
3068:
3060:
3049:
3048:
3046:
3044:
3038:
3015:
3006:
3000:
2999:
2997:
2995:
2976:
2970:
2969:
2967:
2965:
2942:
2936:
2935:
2933:
2931:
2922:. 9 April 2020.
2912:
2906:
2905:
2895:
2871:
2865:
2864:
2862:
2860:
2841:
2835:
2834:
2826:
2820:
2819:
2812:
2806:
2805:
2803:
2801:
2786:
2780:
2779:
2777:
2775:
2769:
2754:
2746:
2731:
2730:
2728:
2726:
2707:
2701:
2700:
2698:
2696:
2687:. 6 June 2014 .
2673:
2664:
2663:
2661:
2659:
2636:
2630:
2629:
2627:
2625:
2602:
2587:
2586:
2575:
2569:
2568:
2566:
2564:
2558:
2550:
2544:
2543:
2534:
2528:
2527:
2519:
2513:
2512:
2501:
2495:
2494:
2492:
2490:
2484:
2476:
2470:
2469:
2458:
2452:
2451:
2449:
2447:
2441:
2434:
2426:
2415:
2414:
2412:
2410:
2404:
2397:
2389:
2383:
2382:
2372:
2348:
2337:
2336:
2327:
2321:
2320:
2318:
2316:
2301:
2295:
2294:
2287:
2281:
2280:
2270:
2246:
2237:
2236:
2234:
2225:
2219:
2218:
2211:
2205:
2204:
2197:
2191:
2190:
2188:
2186:
2175:
2169:
2168:
2161:
2155:
2154:
2152:
2143:
2072:
2047:. They include:
1877:
1873:
1819:
1816:
1810:
1803:
1589:
1585:
1523:Pressure Demand
1383:Nitrogen dioxide
1320:Hydrogen sulfide
1299:Hydrogen cyanide
1139:Chlorine dioxide
1094:(gas mask only)
1053:
1049:
889:
885:
720:158.4 mg silica
686:
682:
509:
502:
495:
418:
400:
130:
125:
121:
118:
109:
108:
100:edit on Wikidata
46:
37:
32:
31:
21:
4930:
4929:
4925:
4924:
4923:
4921:
4920:
4919:
4890:
4889:
4888:
4883:
4835:
4708:
4693:
4673:Breathing mask
4665:
4648:
4583:
4566:
4426:
4405:
4389:ANSI K13.1-1973
4372:
4286:
4273:
4258:
4233:
4220:
4215:
4185:
4180:
4131:
4112:Toxic workplace
4092:Risk management
3985:
3939:
3920:Risk assessment
3816:
3775:
3729:
3700:
3691:
3645:
3599:Physical hazard
3594:Chemical hazard
3575:
3568:
3333:
3330:
3323:
3318:
3276:
3271:
3270:
3260:
3258:
3251:"Fit Test FAQs"
3249:
3248:
3244:
3234:
3232:
3223:
3222:
3218:
3208:
3206:
3197:
3196:
3192:
3182:
3180:
3176:
3169:
3165:
3164:
3155:
3146:
3144:
3140:
3133:
3127:
3126:
3109:
3101:
3097:
3096:
3081:
3073:
3066:
3062:
3061:
3052:
3042:
3040:
3036:
3013:
3007:
3003:
2993:
2991:
2978:
2977:
2973:
2963:
2961:
2956:. 6 June 2014.
2944:
2943:
2939:
2929:
2927:
2914:
2913:
2909:
2872:
2868:
2858:
2856:
2843:
2842:
2838:
2827:
2823:
2814:
2813:
2809:
2799:
2797:
2788:
2787:
2783:
2773:
2771:
2767:
2752:
2748:
2747:
2734:
2724:
2722:
2709:
2708:
2704:
2694:
2692:
2675:
2674:
2667:
2657:
2655:
2638:
2637:
2633:
2623:
2621:
2604:
2603:
2590:
2577:
2576:
2572:
2562:
2560:
2556:
2552:
2551:
2547:
2536:
2535:
2531:
2520:
2516:
2503:
2502:
2498:
2488:
2486:
2482:
2478:
2477:
2473:
2460:
2459:
2455:
2445:
2443:
2439:
2432:
2428:
2427:
2418:
2408:
2406:
2402:
2395:
2391:
2390:
2386:
2349:
2340:
2329:
2328:
2324:
2314:
2312:
2302:
2298:
2289:
2288:
2284:
2247:
2240:
2232:
2226:
2222:
2213:
2212:
2208:
2199:
2198:
2194:
2184:
2182:
2177:
2176:
2172:
2163:
2162:
2158:
2150:
2144:
2140:
2135:
2108:
2107:
2106:
2105:
2096:
2087:
2073:
2064:
2033:
2027:for employers.
2023:is required by
2017:
2011:
1886:
1847:
1840:
1823:
1822:
1817:
1813:
1804:
1791:
1645:Purple/Magenta
1558:Self-Contained
1518:
1497:
1479:
1452:
1428:
1377:
1359:
1329:
1308:
1290:
1272:
1228:
1209:
1200:Carbon monoxide
1194:
1148:
1102:
1037:ANSI Z88.7-2001
1009:
999:
861:esistant to oil
851:sodium chloride
819:
814:
809:
808:
801:sodium chloride
778:
757:HEPA (includes
754:0.3 micron DOP
631:
626:
625:
595:
587:
582:
573:
572:
564:
513:
484:
483:
479:
442:42 CFR 84 guide
404:
403:
401:Interwiki links
392:
349:
304:
254:
245:ANSI K13.1-1973
221:
193:
154:Bureau of Mines
128:
124:
119:
103:
91:ANSI Z88.7-2001
52:
35:
28:
23:
22:
15:
12:
11:
5:
4928:
4918:
4917:
4912:
4907:
4902:
4885:
4884:
4882:
4881:
4869:
4857:
4844:
4841:
4840:
4837:
4836:
4834:
4833:
4828:
4823:
4822:
4821:
4816:
4811:
4806:
4801:
4791:
4790:
4789:
4784:
4774:
4769:
4764:
4759:
4754:
4749:
4744:
4739:
4734:
4729:
4724:
4719:
4713:
4710:
4709:
4699:
4698:
4695:
4694:
4692:
4691:
4690:
4689:
4684:
4679:
4677:Full facepiece
4670:
4667:
4666:
4654:
4653:
4650:
4649:
4647:
4646:
4641:
4636:
4631:
4630:
4629:
4624:
4614:
4609:
4604:
4599:
4594:
4588:
4585:
4584:
4572:
4571:
4568:
4567:
4565:
4564:
4563:
4562:
4557:
4552:
4547:
4542:
4537:
4532:
4527:
4526:
4525:
4510:
4505:
4500:
4499:
4498:
4497:
4496:
4484:Oxygen therapy
4481:
4480:
4479:
4474:
4464:
4463:
4462:
4457:
4455:Bag valve mask
4447:
4442:
4437:
4431:
4428:
4427:
4415:
4414:
4411:
4410:
4407:
4406:
4404:
4403:
4398:
4393:
4392:
4391:
4380:
4378:
4374:
4373:
4371:
4370:
4369:
4368:
4363:
4355:
4350:
4349:
4348:
4343:
4338:
4336:N95 respirator
4328:
4327:
4326:
4316:
4311:
4310:
4309:
4298:
4296:
4288:
4287:
4275:
4274:
4264:
4263:
4260:
4259:
4257:
4256:
4251:
4250:
4249:
4238:
4235:
4234:
4222:
4221:
4214:
4213:
4206:
4199:
4191:
4182:
4181:
4179:
4178:
4166:
4165:
4164:
4159:
4154:
4136:
4133:
4132:
4130:
4129:
4124:
4119:
4114:
4109:
4104:
4102:Source control
4099:
4094:
4089:
4084:
4079:
4077:Process safety
4074:
4069:
4064:
4059:
4054:
4049:
4044:
4039:
4037:Health physics
4034:
4029:
4024:
4019:
4014:
4009:
4004:
3999:
3993:
3991:
3987:
3986:
3984:
3983:
3978:
3968:
3958:
3953:
3947:
3945:
3941:
3940:
3938:
3937:
3932:
3927:
3925:Safety culture
3922:
3917:
3912:
3907:
3905:Permit To Work
3902:
3900:Lockout-tagout
3897:
3892:
3891:
3890:
3885:
3880:
3875:
3870:
3860:
3855:
3850:
3845:
3840:
3835:
3830:
3824:
3822:
3818:
3817:
3815:
3814:
3809:
3803:
3798:
3793:
3787:
3785:
3781:
3780:
3777:
3776:
3774:
3773:
3767:
3762:
3756:
3750:
3744:
3737:
3735:
3731:
3730:
3728:
3727:
3722:
3717:
3711:
3709:
3702:
3693:
3692:
3690:
3689:
3684:
3679:
3674:
3669:
3664:
3659:
3653:
3651:
3647:
3646:
3644:
3643:
3638:
3633:
3628:
3623:
3618:
3613:
3608:
3607:
3606:
3601:
3596:
3591:
3580:
3578:
3570:
3569:
3567:
3566:
3564:Writer's cramp
3561:
3556:
3551:
3546:
3541:
3536:
3531:
3526:
3521:
3519:Pneumoconiosis
3516:
3511:
3506:
3501:
3496:
3491:
3486:
3484:Lead poisoning
3481:
3476:
3471:
3466:
3461:
3459:Golfer's elbow
3456:
3451:
3446:
3444:Fiddler's neck
3441:
3436:
3431:
3426:
3421:
3416:
3411:
3406:
3401:
3399:Chronic stress
3396:
3391:
3386:
3384:Cardiovascular
3381:
3376:
3371:
3366:
3361:
3356:
3351:
3346:
3340:
3338:
3325:
3324:
3317:
3316:
3309:
3302:
3294:
3288:
3287:
3282:
3275:
3274:External Links
3272:
3269:
3268:
3242:
3216:
3190:
3153:
3107:
3079:
3050:
3001:
2971:
2937:
2907:
2866:
2836:
2821:
2807:
2781:
2732:
2702:
2665:
2631:
2588:
2570:
2545:
2529:
2514:
2496:
2471:
2453:
2416:
2384:
2338:
2322:
2296:
2282:
2238:
2220:
2217:. 23 May 2024.
2206:
2192:
2170:
2156:
2137:
2136:
2134:
2131:
2130:
2129:
2124:
2119:
2117:N95 respirator
2114:
2097:
2088:
2079:
2074:
2067:
2066:
2065:
2063:
2060:
2059:
2058:
2055:
2052:
2032:
2029:
2013:Main article:
2010:
2007:
1996:
1995:
1992:
1987:
1982:
1979:
1976:
1973:
1967:
1966:
1963:
1960:
1957:
1954:
1951:
1948:
1944:
1943:
1940:
1937:
1934:
1931:
1928:
1925:
1921:
1920:
1912:
1907:
1902:
1897:
1892:
1881:
1844:N95 respirator
1839:
1836:
1821:
1820:
1811:
1788:
1787:
1784:
1783:
1780:
1777:
1773:
1772:
1769:
1766:
1762:
1761:
1758:
1755:
1751:
1750:
1747:
1744:
1740:
1739:
1736:
1733:
1720:
1719:
1716:
1713:
1709:"Acid Gases":
1707:
1703:
1702:
1699:
1696:
1692:
1691:
1688:
1685:
1681:
1680:
1677:
1674:
1670:
1669:
1666:
1660:
1650:
1649:
1646:
1643:
1642:Radionuclides
1639:
1638:
1635:
1632:
1625:
1624:
1621:
1618:
1612:
1608:
1607:
1601:
1598:
1592:
1582:
1581:
1578:
1570:
1569:
1566:
1555:
1554:
1551:
1547:
1546:
1543:
1538:Supplied-air (
1535:
1534:
1531:
1520:
1519:
1512:
1510:
1507:
1499:
1498:
1495:
1493:
1490:
1484:
1483:
1480:
1477:
1475:
1472:
1469:
1466:
1463:
1461:Vinyl chloride
1457:
1456:
1453:
1450:
1448:
1445:
1442:
1439:
1436:
1434:Sulfur dioxide
1430:
1429:
1426:
1424:
1421:
1415:
1414:
1411:
1408:
1405:
1402:
1396:
1393:
1392:Organic Vapor
1389:
1388:
1385:
1379:
1378:
1375:
1373:
1370:
1364:
1363:
1360:
1357:
1355:
1352:
1349:
1346:
1343:
1337:
1336:
1334:(escape only)
1330:
1327:
1325:
1322:
1316:
1315:
1312:
1309:
1306:
1304:
1301:
1295:
1294:
1291:
1288:
1286:
1283:
1277:
1276:
1273:
1270:
1268:
1265:
1262:
1259:
1256:
1250:
1249:
1246:
1240:
1239:
1236:
1234:Ethylene oxide
1230:
1229:
1226:
1224:
1221:
1217:
1216:
1213:
1210:
1207:
1205:
1202:
1196:
1195:
1192:
1190:
1187:
1181:
1180:
1177:
1171:
1168:
1165:
1162:
1159:
1153:
1152:
1149:
1146:
1144:
1141:
1135:
1134:
1131:
1128:
1125:
1122:
1119:
1116:
1110:
1109:
1106:
1103:
1100:
1098:
1095:
1088:
1087:
1081:
1075:
1072:
1069:
1066:
1060:
998:
995:
945:
944:
941:
937:
936:
933:
932:N99, R99, P99
929:
928:
925:
922:
916:
912:
911:
907:Permitted for
905:
899:
893:
880:
879:
868:
854:
818:
815:
813:
810:
780:
779:
777:
774:
771:
770:
767:
764:
761:
755:
751:
750:
747:
744:
741:
738:
734:
733:
730:
727:
724:
721:
717:
716:
710:Permitted for
708:
702:
696:
690:
630:
627:
596:
588:
586:
585:USBM standards
583:
581:
578:
566:
565:
563:
560:
515:
514:
512:
511:
504:
497:
489:
486:
485:
478:
477:
472:
467:
462:
459:
454:
449:
444:
439:
437:NIOSH TB guide
434:
433:On Wikisource:
431:
426:
405:
399:
398:
397:
394:
393:
391:
390:
385:
380:
375:
370:
368:Source control
365:
359:
356:
355:
351:
350:
348:
347:
342:
337:
335:Failure to use
332:
327:
321:
320:
319:
311:
310:
306:
305:
303:
302:
297:
296:
295:
285:
280:
275:
270:
264:
261:
260:
256:
255:
253:
252:
247:
242:
237:
231:
228:
227:
223:
222:
220:
219:
214:
209:
203:
200:
199:
195:
194:
192:
191:
186:
181:
171:
161:
150:
149:
148:
140:
139:
132:
131:
114:
113:
105:
104:
97:
94:
93:
80:
76:
75:
66:
62:
61:
58:
54:
53:
47:
39:
38:
26:
9:
6:
4:
3:
2:
4927:
4916:
4913:
4911:
4908:
4906:
4903:
4901:
4900:Air pollution
4898:
4897:
4895:
4880:
4879:
4870:
4868:
4867:
4858:
4856:
4855:
4846:
4845:
4842:
4832:
4829:
4827:
4824:
4820:
4817:
4815:
4812:
4810:
4807:
4805:
4802:
4800:
4797:
4796:
4795:
4792:
4788:
4785:
4783:
4780:
4779:
4778:
4775:
4773:
4770:
4768:
4765:
4763:
4760:
4758:
4755:
4753:
4750:
4748:
4745:
4743:
4740:
4738:
4735:
4733:
4730:
4728:
4725:
4723:
4720:
4718:
4717:Breathing gas
4715:
4714:
4711:
4704:
4700:
4688:
4687:orinasal mask
4685:
4683:
4680:
4678:
4675:
4674:
4672:
4671:
4668:
4664:
4659:
4655:
4645:
4642:
4640:
4637:
4635:
4632:
4628:
4625:
4623:
4620:
4619:
4618:
4615:
4613:
4610:
4608:
4605:
4603:
4600:
4598:
4597:Diving helmet
4595:
4593:
4590:
4589:
4586:
4582:
4577:
4573:
4561:
4558:
4556:
4553:
4551:
4548:
4546:
4543:
4541:
4538:
4536:
4533:
4531:
4528:
4524:
4521:
4520:
4519:
4518:Nasal cannula
4516:
4515:
4514:
4511:
4509:
4506:
4504:
4501:
4495:
4492:
4491:
4490:
4487:
4486:
4485:
4482:
4478:
4475:
4473:
4470:
4469:
4468:
4465:
4461:
4458:
4456:
4453:
4452:
4451:
4448:
4446:
4443:
4441:
4438:
4436:
4433:
4432:
4429:
4425:
4420:
4416:
4402:
4399:
4397:
4394:
4390:
4387:
4386:
4385:
4382:
4381:
4379:
4375:
4367:
4364:
4362:
4359:
4358:
4356:
4354:
4351:
4347:
4344:
4342:
4339:
4337:
4334:
4333:
4332:
4329:
4325:
4322:
4321:
4320:
4317:
4315:
4312:
4308:
4305:
4304:
4303:
4300:
4299:
4297:
4294:
4291:Regulated by
4289:
4285:
4280:
4276:
4269:
4265:
4255:
4252:
4248:
4245:
4244:
4243:
4240:
4239:
4236:
4232:
4227:
4223:
4219:
4212:
4207:
4205:
4200:
4198:
4193:
4192:
4189:
4177:
4176:
4167:
4163:
4162:Organizations
4160:
4158:
4155:
4153:
4150:
4149:
4148:
4147:
4138:
4137:
4134:
4128:
4125:
4123:
4120:
4118:
4115:
4113:
4110:
4108:
4105:
4103:
4100:
4098:
4095:
4093:
4090:
4088:
4085:
4083:
4082:Public health
4080:
4078:
4075:
4073:
4070:
4068:
4065:
4063:
4060:
4058:
4055:
4053:
4050:
4048:
4045:
4043:
4040:
4038:
4035:
4033:
4030:
4028:
4025:
4023:
4020:
4018:
4015:
4013:
4010:
4008:
4005:
4003:
4000:
3998:
3995:
3994:
3992:
3988:
3982:
3979:
3976:
3975:United States
3972:
3969:
3966:
3965:United States
3962:
3959:
3957:
3954:
3952:
3949:
3948:
3946:
3942:
3936:
3933:
3931:
3928:
3926:
3923:
3921:
3918:
3916:
3913:
3911:
3908:
3906:
3903:
3901:
3898:
3896:
3893:
3889:
3886:
3884:
3881:
3879:
3876:
3874:
3871:
3869:
3866:
3865:
3864:
3861:
3859:
3856:
3854:
3851:
3849:
3846:
3844:
3843:Diving safety
3841:
3839:
3836:
3834:
3831:
3829:
3826:
3825:
3823:
3819:
3813:
3810:
3807:
3804:
3802:
3799:
3797:
3794:
3792:
3789:
3788:
3786:
3782:
3771:
3768:
3766:
3763:
3760:
3757:
3754:
3751:
3748:
3745:
3742:
3739:
3738:
3736:
3732:
3726:
3723:
3721:
3718:
3716:
3713:
3712:
3710:
3708:International
3706:
3703:
3701:organizations
3698:
3694:
3688:
3685:
3683:
3680:
3678:
3675:
3673:
3670:
3668:
3665:
3663:
3660:
3658:
3655:
3654:
3652:
3648:
3642:
3639:
3637:
3634:
3632:
3629:
3627:
3624:
3622:
3619:
3617:
3614:
3612:
3609:
3605:
3602:
3600:
3597:
3595:
3592:
3590:
3587:
3586:
3585:
3582:
3581:
3579:
3577:
3574:Occupational
3571:
3565:
3562:
3560:
3557:
3555:
3552:
3550:
3547:
3545:
3544:Sports injury
3542:
3540:
3537:
3535:
3532:
3530:
3527:
3525:
3522:
3520:
3517:
3515:
3512:
3510:
3507:
3505:
3502:
3500:
3497:
3495:
3492:
3490:
3489:Low back pain
3487:
3485:
3482:
3480:
3477:
3475:
3472:
3470:
3467:
3465:
3462:
3460:
3457:
3455:
3452:
3450:
3447:
3445:
3442:
3440:
3439:Farmer's lung
3437:
3435:
3432:
3430:
3427:
3425:
3422:
3420:
3417:
3415:
3412:
3410:
3407:
3405:
3402:
3400:
3397:
3395:
3392:
3390:
3387:
3385:
3382:
3380:
3377:
3375:
3372:
3370:
3367:
3365:
3362:
3360:
3357:
3355:
3352:
3350:
3347:
3345:
3342:
3341:
3339:
3337:
3332:
3329:Occupational
3326:
3322:
3315:
3310:
3308:
3303:
3301:
3296:
3295:
3292:
3286:
3283:
3281:
3278:
3277:
3256:
3252:
3246:
3230:
3226:
3220:
3204:
3200:
3194:
3175:
3168:
3162:
3160:
3158:
3139:
3132:
3131:
3124:
3122:
3120:
3118:
3116:
3114:
3112:
3100:
3094:
3092:
3090:
3088:
3086:
3084:
3072:
3065:
3059:
3057:
3055:
3035:
3031:
3027:
3023:
3019:
3012:
3005:
2989:
2985:
2981:
2975:
2959:
2955:
2951:
2947:
2941:
2925:
2921:
2917:
2911:
2903:
2899:
2894:
2889:
2885:
2881:
2877:
2870:
2854:
2850:
2846:
2840:
2832:
2825:
2817:
2811:
2795:
2791:
2785:
2766:
2762:
2758:
2751:
2745:
2743:
2741:
2739:
2737:
2720:
2716:
2712:
2706:
2690:
2686:
2682:
2678:
2672:
2670:
2653:
2649:
2645:
2641:
2635:
2619:
2615:
2611:
2607:
2601:
2599:
2597:
2595:
2593:
2584:
2580:
2574:
2555:
2549:
2541:
2540:
2533:
2525:
2518:
2510:
2506:
2500:
2481:
2475:
2467:
2463:
2457:
2438:
2431:
2425:
2423:
2421:
2401:
2394:
2388:
2380:
2376:
2371:
2366:
2362:
2358:
2354:
2347:
2345:
2343:
2334:
2333:
2326:
2311:
2307:
2300:
2292:
2286:
2278:
2274:
2269:
2264:
2260:
2256:
2252:
2245:
2243:
2231:
2224:
2216:
2210:
2202:
2196:
2180:
2174:
2166:
2160:
2149:
2142:
2138:
2128:
2125:
2123:
2120:
2118:
2115:
2113:
2110:
2109:
2104:
2103:
2102:
2095:
2094:
2093:
2086:
2085:
2084:
2077:
2071:
2056:
2053:
2050:
2049:
2048:
2046:
2037:
2028:
2026:
2022:
2016:
2006:
2004:
1993:
1991:
1988:
1986:
1983:
1980:
1977:
1974:
1972:
1969:
1968:
1964:
1961:
1958:
1955:
1952:
1949:
1946:
1945:
1941:
1938:
1935:
1932:
1929:
1926:
1923:
1922:
1919:
1918:
1913:
1911:
1908:
1906:
1903:
1901:
1898:
1896:
1893:
1890:
1885:
1882:
1879:
1878:
1872:
1870:
1865:
1863:
1856:
1851:
1845:
1835:
1827:
1815:
1808:
1802:
1800:
1798:
1796:
1794:
1789:
1781:
1778:
1775:
1774:
1770:
1767:
1764:
1763:
1759:
1756:
1753:
1752:
1748:
1745:
1742:
1741:
1737:
1734:
1732:
1731:
1727:
1722:
1721:
1717:
1714:
1712:
1708:
1704:
1700:
1697:
1694:
1693:
1689:
1686:
1683:
1682:
1678:
1675:
1672:
1671:
1667:
1665:
1661:
1659:
1657:
1652:
1651:
1647:
1644:
1641:
1640:
1636:
1633:
1631:
1627:
1626:
1622:
1619:
1617:
1614:Any of above
1613:
1609:
1606:
1602:
1599:
1597:
1596:abbreviation
1593:
1591:
1590:
1579:
1576:
1572:
1571:
1567:
1565:
1563:
1557:
1556:
1552:
1549:
1548:
1544:
1541:
1537:
1536:
1532:
1530:
1528:
1522:
1521:
1516:
1508:
1505:
1501:
1500:
1491:
1489:
1486:
1485:
1481:
1476:
1473:
1470:
1467:
1464:
1462:
1459:
1458:
1454:
1449:
1446:
1443:
1440:
1437:
1435:
1432:
1431:
1422:
1420:
1417:
1416:
1412:
1409:
1406:
1403:
1401:
1397:
1394:
1391:
1390:
1386:
1384:
1381:
1380:
1371:
1369:
1368:Mercury vapor
1366:
1365:
1361:
1356:
1353:
1350:
1347:
1344:
1342:
1339:
1338:
1335:
1331:
1323:
1321:
1318:
1317:
1313:
1310:
1302:
1300:
1297:
1296:
1292:
1284:
1282:
1279:
1278:
1274:
1269:
1266:
1263:
1260:
1257:
1255:
1252:
1251:
1247:
1245:
1242:
1241:
1237:
1235:
1232:
1231:
1222:
1219:
1218:
1214:
1211:
1203:
1201:
1198:
1197:
1188:
1186:
1183:
1182:
1178:
1176:
1172:
1169:
1166:
1163:
1160:
1158:
1155:
1154:
1150:
1142:
1140:
1137:
1136:
1132:
1129:
1126:
1123:
1120:
1117:
1115:
1112:
1111:
1107:
1104:
1096:
1093:
1090:
1089:
1086:
1082:
1080:
1076:
1073:
1070:
1067:
1065:
1064:abbreviation
1061:
1059:
1058:designations
1055:
1054:
1048:
1046:
1045:public domain
1042:
1038:
1034:
1029:
1026:
1021:
1013:
1008:
1004:
994:
992:
988:
987:by definition
983:
981:
977:
972:
968:
964:
960:
956:
952:
942:
939:
938:
934:
931:
930:
923:
920:
917:
913:
910:
906:
904:
900:
898:
894:
891:
890:
884:
877:
875:
869:
866:
862:
860:
855:
852:
848:
846:
841:
840:
839:
831:
823:
807:
804:
802:
797:
793:
789:
785:
768:
765:
762:
760:
756:
753:
752:
748:
745:
742:
739:
736:
735:
731:
728:
725:
722:
719:
718:
715:
714:
709:
707:
703:
701:
697:
695:
691:
688:
687:
681:
677:
675:
670:
668:
664:
660:
656:
655:radionuclides
652:
643:
635:
623:
619:
615:
612:establishing
611:
607:
605:
601:
593:
577:
570:
559:
557:
553:
549:
544:
542:
538:
534:
530:
526:
522:
510:
505:
503:
498:
496:
491:
490:
488:
487:
482:
476:
473:
471:
468:
466:
463:
460:
458:
455:
453:
450:
448:
445:
443:
440:
438:
435:
432:
430:
427:
425:
422:
421:
420:
417:
409:
396:
395:
389:
386:
384:
381:
379:
376:
374:
371:
369:
366:
364:
361:
360:
358:
357:
353:
352:
346:
343:
341:
338:
336:
333:
331:
328:
326:
323:
322:
318:
315:
314:
313:
312:
308:
307:
301:
298:
294:
293:Mental health
291:
290:
289:
286:
284:
281:
279:
276:
274:
271:
269:
266:
265:
263:
262:
258:
257:
251:
248:
246:
243:
241:
240:NIOSH ratings
238:
236:
233:
232:
230:
229:
225:
224:
218:
215:
213:
210:
208:
205:
204:
202:
201:
197:
196:
190:
187:
185:
182:
179:
175:
172:
169:
165:
162:
159:
155:
152:
151:
147:
144:
143:
142:
141:
137:
134:
133:
129:United States
123:
116:
115:
111:
110:
101:
95:
92:
88:
84:
81:
77:
74:
70:
67:
63:
60:NIOSH ratings
59:
57:Other name(s)
55:
51:
45:
40:
33:
30:
19:
4876:
4864:
4852:
4787:Demand valve
4639:Gas extender
4560:Venturi mask
4450:Resuscitator
4383:
4173:
4144:
4066:
3971:Right to sit
3961:Potty parity
3554:Tennis elbow
3549:Surfer's ear
3494:Mesothelioma
3464:Hearing loss
3259:. Retrieved
3245:
3233:. Retrieved
3219:
3207:. Retrieved
3193:
3181:. Retrieved
3145:, retrieved
3129:
3104:. CDC NIOSH.
3071:the original
3041:. Retrieved
3024:(1): 25–38.
3021:
3017:
3004:
2992:. Retrieved
2983:
2974:
2962:. Retrieved
2949:
2940:
2928:. Retrieved
2919:
2910:
2886:(3): 87–90.
2883:
2879:
2869:
2857:. Retrieved
2848:
2839:
2830:
2824:
2810:
2798:. Retrieved
2784:
2772:. Retrieved
2723:. Retrieved
2714:
2705:
2693:. Retrieved
2680:
2656:. Retrieved
2643:
2634:
2622:. Retrieved
2609:
2583:the original
2573:
2561:. Retrieved
2548:
2538:
2532:
2523:
2517:
2509:the original
2499:
2487:. Retrieved
2474:
2466:the original
2456:
2444:. Retrieved
2407:. Retrieved
2387:
2363:(2): 37–55.
2360:
2356:
2331:
2325:
2313:. Retrieved
2309:
2299:
2285:
2261:(2): 37–55.
2258:
2254:
2223:
2209:
2195:
2183:. Retrieved
2173:
2159:
2141:
2099:
2098:
2090:
2089:
2081:
2080:
2042:
2018:
1999:
1989:
1984:
1970:
1915:
1866:
1860:
1832:
1814:
1724:
1710:
1663:
1656:Chloropicrin
1654:
1630:Chloropicrin
1620:Gray stripe
1615:
1604:
1595:
1559:
1524:
1399:
1333:
1244:Formaldehyde
1174:
1084:
1078:
1063:
1057:
1036:
1032:
1030:
1022:
1018:
986:
984:
970:
966:
958:
948:
902:
896:
892:Particulate
881:
873:
871:
858:
857:
844:
843:
836:
805:
781:
758:
711:
705:
699:
693:
689:Particulate
678:
674:tuberculosis
671:
648:
597:
574:
545:
533:particulates
523:is the U.S.
520:
518:
413:
278:Tuberculosis
239:
65:Regulated by
29:
4915:Respirators
4804:Counterlung
4747:Hazmat suit
4545:Oxygen tent
4540:Oxygen mask
4535:Oxygen hood
4460:Pocket mask
4440:Bubble CPAP
4377:Regulations
4357:Facepieces
4007:Drug policy
3944:Legislation
3650:Professions
3474:Indium lung
3369:Brucellosis
3364:Berylliosis
3235:10 February
2984:www.cdc.gov
2310:www.epa.gov
2185:October 27,
2167:. 90006709.
2021:Fit testing
1905:Particulate
1341:Methylamine
1173:White with
921:, R95, P95
895:Respirator
692:Respirator
529:respirators
383:Elastomeric
120:Respirators
4894:Categories
4794:Rebreather
4727:Dead space
4467:Ventilator
4361:Smoke hood
4295:and others
4284:Respirator
4107:Toxic tort
4057:Job strain
4027:Ergonomics
4002:Break room
3524:Radium jaw
3514:Phossy jaw
3389:Chalicosis
3359:Barotrauma
3349:Asbestosis
2964:9 February
2725:9 February
2695:9 February
2658:9 February
2624:9 February
2133:References
2076:Wikisource
1947:30 CFR 11
1001:See also:
853:particles.
776:Transition
388:Disposable
273:Asbestosis
79:Regulation
50:respirator
18:K13.1-1973
4742:Facepiece
4682:Half mask
4472:Iron lung
4341:Dust mask
3828:Checklist
3796:ISO 45001
3784:Standards
3534:Silicosis
3344:Acrodynia
2315:28 August
1917:Cartridge
1914:Chemical
1695:AG/OV/AM
1662:Red with
1419:Phosphine
1400:or lower
1398:1000 ppm
817:42 CFR 84
694:Approval
629:30 CFR 11
300:2024 H5N1
268:Silicosis
178:1995/1998
136:Executive
87:42 CFR 84
83:30 CFR 11
4878:Glossary
4854:Category
4307:Canister
4302:Gas mask
4157:Journals
4146:Category
4072:Overwork
3990:See also
3743:(Canada)
3734:National
3697:Agencies
3559:Tinnitus
3429:Erethism
3336:injuries
3331:diseases
3255:Archived
3229:Archived
3203:Archived
3174:Archived
3138:archived
3034:Archived
2988:Archived
2958:Archived
2924:Archived
2902:26078617
2853:Archived
2818:. NIOSH.
2794:Archived
2765:Archived
2719:Archived
2689:Archived
2652:Archived
2618:Archived
2610:ecfr.gov
2489:27 April
2437:Archived
2400:Archived
2379:32572305
2277:32572305
2062:See also
1895:Air-line
1889:Canister
1884:Gas mask
1880:US Code
1857:(TC-13F)
1805:See the
1573:Escape (
1540:Air-line
1502:Demand (
1407:Depends
1348:100 ppm
1157:Chlorine
1121:300 ppm
1092:Acid gas
1007:Gas mask
955:asbestos
901:Minimum
704:Minimum
698:Maximum
659:asbestos
548:aerosols
288:COVID-19
4866:Commons
4707:General
4617:Snorkel
4175:Commons
3755:(Spain)
3749:(Italy)
3576:hygiene
3374:Burnout
3261:15 June
2994:22 June
2893:4456839
2800:20 June
2792:. CDC.
2774:14 June
2542:. 1996.
2370:7307331
2335:. 1992.
2268:7307331
1994:TC-23C
1981:TC-13F
1978:TC-19C
1975:TC-14G
1965:TC-23C
1962:TC-21C
1959:TC-21C
1956:TC-13F
1953:TC-19C
1950:TC-14G
1779:Purple
1768:Orange
1730:Toluene
1687:Yellow
1468:10 ppm
1441:50 ppm
1351:10 ppm
1261:50 ppm
1164:10 ppm
1124:50 ppm
1114:Ammonia
943:99.97%
766:99.97%
746:99.05%
743:1.5 mg
729:98.86%
726:1.8 mg
620:), the
616:(later
250:OSH Act
176:(until
166:(until
156:(until
146:Summary
3858:Hazard
3821:Safety
3354:Asthma
3209:8 June
3183:8 June
3147:3 July
3043:4 July
2930:26 May
2900:
2890:
2859:25 May
2377:
2367:
2275:
2265:
1990:TC-21C
1985:TC-84A
1942:BM-23
1936:BM-21
1933:BM-13
1930:BM-19
1927:BM-14
1746:Green
1735:Brown
1726:Xylene
1715:White
1698:Brown
1684:AG/OV
1673:AG/AM
1600:Color
1471:1 ppm
1444:5 ppm
1410:Black
1404:5 ppm
1264:5 ppm
1167:5 ppm
1130:Green
1127:83.3%
1105:White
1079:color
980:micron
957:. For
897:Class
870:P for
856:R for
842:N for
794:under
657:, and
340:Beards
330:Design
309:Misuse
126:in the
4293:NIOSH
3997:Break
3177:(PDF)
3170:(PDF)
3141:(PDF)
3134:(PDF)
3102:(PDF)
3074:(PDF)
3067:(PDF)
3037:(PDF)
3014:(PDF)
2768:(PDF)
2753:(PDF)
2563:8 May
2557:(PDF)
2483:(PDF)
2446:8 May
2440:(PDF)
2433:(PDF)
2409:8 May
2403:(PDF)
2396:(PDF)
2233:(PDF)
2151:(PDF)
2122:NIOSH
1862:NIOSH
1776:HEPA
1212:Blue
792:NIOSH
189:NIOSH
98:[
3808:(US)
3772:(US)
3761:(UK)
3699:and
3334:and
3263:2024
3237:2020
3211:2024
3185:2024
3149:2024
3045:2024
2996:2020
2966:2020
2932:2020
2898:PMID
2861:2020
2802:2024
2776:2024
2727:2020
2715:OSHA
2697:2020
2660:2020
2626:2020
2565:2024
2491:2024
2448:2024
2411:2024
2375:PMID
2317:2021
2273:PMID
2187:2020
2025:OSHA
1939:N/A
1910:PAPR
1900:SCBA
1855:SCBA
1782:Yes
1757:Tan
1749:Yes
1580:ESC
1575:SCBA
1562:SCBA
1527:SCBA
1504:SCBA
1492:TDI
1474:90%
1447:90%
1413:Yes
1354:90%
1267:90%
1215:Yes
1170:50%
1133:Yes
1025:ANSI
1005:and
963:NaCl
935:99%
927:Yes
924:95%
876:roof
872:oil-
788:MSHA
784:MESA
769:Yes
763:N/A
663:lead
651:MSHA
618:MSHA
614:MESA
608:The
519:The
283:SARS
217:NFPA
212:AIHA
207:ANSI
184:OSHA
174:MSHA
168:1978
164:MESA
158:1969
3026:doi
2888:PMC
2757:doi
2365:PMC
2263:PMC
1924:BM
1765:MV
1754:FM
1628:HN/
1568:SC
1553:SB
1545:SA
1533:PD
1509:DE
1496:N/A
1478:N/A
1465:VC
1451:N/A
1438:SD
1427:N/A
1423:PH
1395:OV
1387:ND
1376:N/A
1372:MV
1358:N/A
1345:MA
1328:N/A
1324:HS
1307:N/A
1303:HN
1289:N/A
1285:HF
1271:N/A
1258:HC
1248:FM
1238:EO
1227:N/A
1223:CS
1208:N/A
1204:CO
1193:N/A
1189:CN
1161:CL
1147:N/A
1143:CD
1118:AM
1101:N/A
1097:AG
919:N95
749:No
732:No
667:CDC
235:N95
4896::
3172:.
3156:^
3110:^
3082:^
3053:^
3032:.
3020:.
3016:.
2982:.
2952:.
2948:.
2918:.
2896:.
2884:50
2882:.
2878:.
2847:.
2763:.
2735:^
2713:.
2683:.
2679:.
2668:^
2646:.
2642:.
2612:.
2608:.
2591:^
2419:^
2373:.
2361:36
2359:.
2355:.
2341:^
2308:.
2271:.
2259:36
2257:.
2253:.
2241:^
1891:)
1792:^
1577:)
1564:)
1542:)
1529:)
1506:)
991:μm
951:TB
909:TB
713:TB
676:.
558:.
89:,
85:,
71:,
4210:e
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3977:)
3973:(
3967:)
3963:(
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3239:.
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3187:.
3047:.
3028::
3022:5
2998:.
2968:.
2934:.
2904:.
2863:.
2804:.
2778:.
2759::
2729:.
2699:.
2662:.
2628:.
2567:.
2493:.
2450:.
2413:.
2381:.
2319:.
2279:.
2189:.
2153:.
1887:(
1846:.
1728:/
1560:(
1525:(
1517:)
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859:r
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594:.
508:e
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494:v
180:)
170:)
160:)
102:]
20:)
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