Respirators for Hydrogen Sulfide and Wastewater
Hydrogen sulfide (sewers, wastewater, oil and gas): the exposure limits, the OSHA and Cal/OSHA rule paragraphs as written, and the North and Dräger respirators, cartridges and filters whose own published data lists the hazard, with live prices. We sell nationwide; ships in 1–2 business days; most orders arrive in 3–7 business days.
The exposure limits
| Source | Limit |
|---|---|
| OSHA Table Z-2 (29 CFR 1910.1000) | Hydrogen sulfide acceptable ceiling 20 ppm; acceptable maximum peak 50 ppm for 10 minutes once per shift |
| NIOSH Pocket Guide | REL ceiling 10 ppm (10-minute); IDLH 100 ppm |
| Cal/OSHA Table AC-1 (Title 8 §5155) | Hydrogen sulfide 10 ppm TWA, 15 ppm STEL, ceiling 50 ppm |
What the federal rule says
Each entry is condensed from the paragraph cited; the paragraph itself is the rule and the link opens it.
29 CFR 1910.134(d)(2): IDLH atmospheres require a pressure-demand SCBA or a combination pressure-demand supplied-air respirator with auxiliary self-contained air supply; respirators provided only for escape from IDLH atmospheres shall be NIOSH-certified for escape from the atmosphere in which they will be used.
29 CFR 1910.134(d)(3)(iii)(B): For gases and vapors below IDLH: an atmosphere-supplying respirator, or an air-purifying respirator with a NIOSH-certified ESLI for the contaminant, or a cartridge change schedule based on objective data.
Source: 29 CFR, Occupational Safety and Health Standards, as published by OSHA (ecfr.gov / osha.gov), read Nov 2–3 2026.
California (Cal/OSHA)
Each entry is condensed from the paragraph cited; the paragraph itself is the rule and the link opens it.
Title 8 §5144(d): The same rules apply under Cal/OSHA.
Source: California Code of Regulations, Title 8, as published by Cal/OSHA (dir.ca.gov), read Nov 2–3 2026.
What the makers' data lists for hydrogen sulfide
Hydrogen sulfide is listed on the North chart for the N75003L, 7583P100L, 75SCL and 75SCP100L cartridges (as part of acid gas or the Defender multi-purpose group) and in Dräger's selection guide for its Multi-Gas+ HS filters. The IDLH of 100 ppm (NIOSH) is the line above which 1910.134(d)(2) applies. Draeger-Tubes and gas monitors for H2S are on the gas detection pages.
North cartridges and filters whose chart entry covers it
| Part number | Item | Version | Price | |
|---|---|---|---|---|
| N75003L | North N75003L Organic Vapor and Acid Gas (OV/AG) Cartridge Organic Vapor and Acid Gas (Chlorine, Hydrogen Chloride, Sulfur Dioxide, Hydrogen Fluoride, Hydrogen Sulfide, Chlorine D; label Yellow | $16.49 | ||
| 75SCL | North 75SCL Defender Multi-Gas Vapor Cartridge Organic Vapor, Ammonia, Methylamine, Formaldehyde and Acid Gas (Chlorine, Hydrogen Chloride, Sulfur Dioxide, Hydrogen Su; label Olive | $16.99 | ||
| 7583P100L | North 7583P100L Organic Vapor and Acid Gas (OV/AG) Cartridge with P100 Filter Organic Vapor and Acid Gas (Chlorine, Hydrogen Chloride, Sulfur Dioxide, Hydrogen Fluoride, Hydrogen Sulfide, Chlorine D; label Yellow and Magenta | $26.99 | ||
| 75SCP100L | North 75SCP100L Defender Multi-Contaminant Cartridge with P100 Filter Organic Vapor, Ammonia, Methylamine, Formaldehyde and Acid Gas (Chlorine, Hydrogen Chloride, Sulfur Dioxide, Hydrogen Su; label Olive and Magenta | $30.99 |
Source: North Cartridge & Filter Reference Chart; NIOSH approval labels (PIP).
North facepieces
Source: North product sheets (PIP).
North escape respirators
| Part number | Item | Version | Price | |
|---|---|---|---|---|
| 7902 | North 7900 Series Emergency Escape Mouthbit Respirator | Acid gas | $256.00 | |
| 7904 | North 7900 Series Emergency Escape Mouthbit Respirator | Ammonia / methylamine (silicone) | $323.00 | |
| ER2000CBRN | North ER2000CBRN CBRN Escape Hood | $346.00 |
Source: North 7900 Series and ER2000CBRN data sheets (PIP).
Dräger filters listed for it
| Part number | Item | Version | Price | |
|---|---|---|---|---|
| 6738351 | Draeger 6738351 X-plore Bayonet MultiGas Filter OV/AG/HF/FM/CD/AM/MA/HS, Pack of 20 Gas filter Multi-Gas+ (OV/AG/HF/FM/CD/AM/MA/HS); selection guide lists it for Hydrogen sulphide | $201.96 | ||
| 6738361 | Draeger 6738361 X-plore Bayonet Combination Filter OV/AG/HF/FM/CD/AM/MA/HS/P100, Pack of 14 Combination filter Multi-Gas+/P100 (OV/AG/HF/FM/CD/AM/MA/HS/P100); selection guide lists it for Hydrogen sulphide | $261.39 |
Source: Dräger Guide for Selection and Use of Respiratory Filtering Devices, NIOSH (DMC-104642); Dräger X-plore Bayonet Filters NIOSH product information (DMC-109824); Dräger X-plore 8000 product information (DMC-102510).
Dräger masks
Source: Dräger Product Catalog, Industrial Applications (DMC-107423).
Dräger X-plore 8000 PAPR blowers
| Part number | Item | Version | Price | |
|---|---|---|---|---|
| R59500 | Draeger R59500 X-plore 8500 (IP) PAPR Blower Unit | $762.01 | ||
| R59550 | Draeger R59550 X-plore 8700 (EX) PAPR Blower Unit | $1259.70 |
Source: Dräger X-plore 8000 product information (DMC-102510).
Dräger PARAT escape hoods
| Part number | Item | Version | Price | |
|---|---|---|---|---|
| 3721331 | Draeger 3721331 PARAT 4920 Industrial Escape Hood, NIOSH, Soft Pack | $267.27 | ||
| R59431 | Draeger R59431 PARAT 4730 Industrial Escape Hood, Hard Case | $221.47 | ||
| R59415 | Draeger PARAT 5500 Series Fire Escape Hood | PARAT 5510 Single Pack | $274.93 | |
| 3721330 | Draeger PARAT 5500 Series Fire Escape Hood | PARAT 5520 Soft Pack | $306.87 | |
| R59435 | Draeger PARAT 5500 Series Fire Escape Hood | PARAT 5530 Hard Case | $308.88 | |
| R59445 | Draeger PARAT 5550 Fire Escape Hood with Holster | PARAT 5550 | $375.91 | |
| 3700073 | Draeger PARAT 5550 Fire Escape Hood with Holster | PARAT 5550h | $382.70 | |
| 3721329 | Draeger PARAT 7500 Series Fire and Industrial Escape Hood | PARAT 7520 Soft Pack | $366.58 | |
| R59437 | Draeger PARAT 7500 Series Fire and Industrial Escape Hood | PARAT 7530 Hard Case | $363.52 | |
| 3702150 | Draeger 3702150 PARAT 1260 Mouthpiece Escape Respirator, ABEK 10 Filter | $83.90 | ||
| 3704477 | Draeger 3704477 PARAT 3160 Half Mask Escape Respirator, Pack of 12 | $1379.40 | ||
| 3704479 | Draeger 3704479 PARAT 3260 Mouthpiece Escape Respirator, Pack of 12 | $1532.52 |
Source: Dräger PARAT product pages (draeger.com).
Dräger selection guide entries
1 entries in the Dräger respiratory selection guide match hydrogen sulfide; each names the filters by part number.
| Substance | CAS | Dräger filter part numbers |
|---|---|---|
| Hydrogen sulphide | 7783-06-4 | 6738351, 6738361 |
Source: Dräger Respiratory Protection Selection Guide (PIP document library).
Assigned protection factor
| Respirator type (OSHA Table 1) | APF |
|---|---|
| Air-purifying half mask | 10 |
| Air-purifying full facepiece | 50 |
| Powered air-purifying full facepiece | 1000 |
Source: OSHA 29 CFR 1910.134 Table 1 (Assigned Protection Factors). The APF applies only when the respirator is used in a program that meets the standard, including fit testing of tight-fitting facepieces (29 CFR 1910.134(f)) and a cartridge change schedule (29 CFR 1910.134(d)(3)(iii)).
Guides: half mask vs full facepiece · assigned protection factors · cartridge change schedules · P100 vs N95 vs R95 · what OSHA requires for fit testing · cleaning and storing respirators.
Respirators for Hydrogen Sulfide and Wastewater questions
Which cartridges list hydrogen sulfide? North N75003L, 7583P100L, 75SCL and 75SCP100L (chart); Dräger filters coded HS: Multi-Gas+ 6738351 and 6738361 and the X-plore 8000 MultiGas filters.
What is the H2S IDLH? 100 ppm (NIOSH Pocket Guide). The OSHA ceiling is 20 ppm with a 50 ppm peak for 10 minutes once per shift.