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Hydrogen sulfide – H2S

Here is gathered essential information on hydrogen sulfide or sulfurated hydrogen (H2S): characteristics, effects on health, detection devices & systems – hydrogen sulfide detector – and proper respiratory protective equipment against organic vaporsH2S respirator: gas mask or PAPR with B gas filter.

hydrogen sulfide detectors and H2S respirators for better safety against organic vapors

Hydrogen sulfide properties

Hydrogen sulfide (H2S) – also known as sulfurated hydrogen – is naturally present on Earth. This gas is exhausted during organic and bacterial material decomposition – which explains its massive presence in sewers and wastewater treatment plants. It is widely used in the chemical industry to produce inorganic sulfurs and sulfuric acid. H2S can also be found in the steel industry to remove dirt from metals.

CASVME (8 heures)VLE (15 minutes)LIEIPDensité / AirFiltre / ARI
200-846-25 ppm10 ppm4 %10.49 eV1.19B

Hydrogen sulfide effects on health

Hydrogen sulfide (H2S) is a colorless gas with a strong rotten egg smell. This gas is very toxic by inhalation (R26) and causes cellular hypoxia. Being exposed to low concentrations affects the eyes (swelling) and the breathing system (lungs burns). It is also extremely flammable (R12), especially in contact with oxidizers featuring explosive limits between 4 and 46% volume.

 Hydrogen sulfide exposure chart symptoms: why use H2S respirators and monitors

Hydrogen sulfide exposure & poisoning symptoms (H2S)

Hydrogen sulfide detector - H2S

Even if H2S and organic vapors features a rotten egg smell, only a hydrogen sulfide detector can accurately measure concentrations of this extremely toxic gas. It is recommended to use portable or fixed hydrogen sulfide detection equipment performing ppm measurements.

The compact disposable gas detector WatchGas PDM continuously and accurately measures concentrations of carbon monoxide (CO), hydrogen sulfide (H2S), sulfur dioxide (SO2), ammonia (NH3) or oxygen (O2) even in the harshest conditions.

  • Disposable gas detector for CO, H2S, NH3, SO2 or O2 gas monitoring
  • 2 year continuous runtime
  • CO, H2S,NH3 SO2 or O2 detection
  • High performance in a small housing
  • Easy to use with large LCD display
  • Convenient accessories available: docking station and infrared module
  • Additional information
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Disposable gas detector WatchGas PDM

The compact disposable gas detector WatchGas PDM continuously and accurately measures concentrations of carbon monoxide (CO), hydrogen sulfide (H2S), sulfur dioxide (SO2), ammonia (NH3) or oxygen (O2) even in the harshest conditions.

Disposable gas detector for CO, H2S, NH3, SO2 or O2 gas monitoring
  • 2 year continuous runtime
  • CO, H2S,NH3 SO2 or O2 detection
  • High performance in a small housing
  • Easy to use with large LCD display
  • Convenient accessories available: docking station and infrared module
Additional information

The WatchGas PDM disposable gas detector is a single-gas detector that continuously operates for two years. This daily portable gas monitor offers its user high reliability and comfort of use in any environment.

This personal protective equipment operates up to two years maintenance-free and is one of the most cost-effective single-gas detector on the market. Because of its disposable nature, this portable gas detector runs continuously from first start-up and requires no lithium battery charging or electrochemical sensor replacement. This monitor offers great reliability and no maintenance downtime.

The WatchGas PDM disposable single-gas detector is easy to wear thanks to its strong metal crocodile clip and can be worn on a collar, a belt or even a safety helmet. Compact and lightweight with a weight going from 93g up to 104g depending on the sensor, this portable single-gas detector is IP67 certified against dusts and water. Its housing is made of polycarbonate and rubber, making the WatchGas PDM a rugged disposable gas detector that can be used even in the harshest environments.

Once the target gas concentrations in ambient air exceeds alarm thresholds, the powerful 95dB audiovisual alarm of the WatchGas PDM single-gas detector will activate to alert people working in the hazardous area.

Thanks to its optional docking station, it is even easier to calibrate and bump test the WatchGas PDM disposable gas monitor. This docking station can hold up to 4 WatchGas PDM single-gas devices at once for faster testing of several instruments. It can also manage the detectors settings, test parameters and can be used to transfer data stored for further analysis. Moreover, as it can be easily carried and used with rechargeable batteries, the WDS docking station is ideal for in-vehicle or multi-site use.

The WIR – WatchGas IR – infrared module also available as an option enables remote detector configuration (alarm thresholds) and data retrieving of the last 30 alarm events.

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The X-am 2500 portable 4 gas monitor has been especially designed to accurately monitor concentrations of 1 up to 4 gases:  combustible gas (0 - 100% LEL) oxygen (O2), carbon monoxide (CO), hydrogen sulfide (H2S), nitrogen dioxide (NO2) and sulfur dioxide (SO2). The device is guaranteed for 3 years.

  • 4 gas monitor: Drager portable multi gas detector for oxygen O2,CO, H2S, NO2, and SO2 monitoring
  • Large LCD display for easy concentrations reading
  • High capacity battery for over 12 hours operation
  • Ergonomic and robust design, ATEX approved
  • Long-lasting specific sensors
  • Available with optional pump for remote sampling
  • Additional information
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Portable 4 gas monitor X-am 2500

The X-am 2500 portable 4 gas monitor has been especially designed to accurately monitor concentrations of 1 up to 4 gases:  combustible gas (0 - 100% LEL) oxygen (O2), carbon monoxide (CO), hydrogen sulfide (H2S), nitrogen dioxide (NO2) and sulfur dioxide (SO2). The device is guaranteed for 3 years.

4 gas monitor: Drager portable multi gas detector for oxygen O2,CO, H2S, NO2, and SO2 monitoring
  • Large LCD display for easy concentrations reading
  • High capacity battery for over 12 hours operation
  • Ergonomic and robust design, ATEX approved
  • Long-lasting specific sensors
  • Available with optional pump for remote sampling
Additional information

Especially designed for use in hazardous atmospheres, the X-am 2500 portable multi gas detector is ATEX approved for zone 0 (permanent explosive atmosphere). This small 4 gas monitor can accurately and reliably detect the presence of up to 4 gases among O2 (oxygen), CO (carbon monoxide), H2S (hydrogen sulfide), NO2 (nitrogen dioxide) and SO2 (sulfur dioxide).

The powerful tiny sensors of the X-am 2500 multi gas detector allow safe and reliable detection of hazardous gases concentrations. Thus these high performance gas detection sensors are ideally well-suited for industrial applications and refineries. Moreover, thanks to their unique design, these gas detection sensors feature a long-lasting shelf life – up to 5 years for O2, CO and H2S sensors. This high sensor durability then enables reduction of gas detection related operating costs.

Thanks to its compact and lightweight design associated to a robust crocodile clip, the X-am 2500 portable 4 gas monitor can be easily and comfortably worn on a belt or on a collar without disturbing the user. Moreover, this portable multi gas  detector features several gas entries on the top and on the front in order to properly operate even if the device is inside a pocket or if one of the entries is accidentally covered. As a safety device against potentially dangerous gas concentrations, the X-am 2500 has a 3 years guarentee to ensure maximum security to its user.

The X-am 2500 portable gas monitor  features a large easy to read LCD display. All of the target gases are simultaneously displayed on the screen and once a gas alarm occurs, the hazardous target gas is highlighted for fast recognition of the hazard. The ultra-bright visual alarm can be seen at 360° and is coupled with acoustic 90 dB at 30 cm and vibrating alarms.

An optional gas sampling pump is available to draw remote samples up to 30 meters in order to get sure of gases concentrations in confined spaces like tanks or pits before any intervention. This gas sampling pump, designed for this 4 gas monitor, automatically triggers upon the device start-up and it is very easy for the user to switch from pump mode to diffusion mode without any tool.

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The Pac 6500 by Dräger is an easy to use single-gas detector that offers a very fast response time and excellent precision.

Monitoring: Carbon monoxide (CO), Hydrogen sulfide (H2S), Oxygen (O2), Sulfur dioxide (SO2)

  • Portable single-gas detector Pac 6500 by Drager for CO, H2S, SO2 and O2 monitoring
  • Operating conditions: -30 °C to 55 °C, 700 to 1 300 hPa
  • Alert signals: audible 90dB alarm , flashing LED lights, vibration
  • ultra resistant housing, waterproof, dustproof, IP68
  • Large backlit screen, no text & clear information display
  • Certifications : cCSAus, IECEx, ATEX, CE
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Portable single-gas detector Pac 6500

The Pac 6500 by Dräger is an easy to use single-gas detector that offers a very fast response time and excellent precision.

Monitoring: Carbon monoxide (CO), Hydrogen sulfide (H2S), Oxygen (O2), Sulfur dioxide (SO2)

Portable single-gas detector Pac 6500 by Drager for CO, H2S, SO2 and O2 monitoring
  • Operating conditions: -30 °C to 55 °C, 700 to 1 300 hPa
  • Alert signals: audible 90dB alarm , flashing LED lights, vibration
  • ultra resistant housing, waterproof, dustproof, IP68
  • Large backlit screen, no text & clear information display
  • Certifications : cCSAus, IECEx, ATEX, CE
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ATEX gas detector with 4-20 mA linear output, display, 3 relays (alarm 1, alarm 2 and fault) and MODBUS communication. Detection of the combustible gases (IR or catalytic), CO2 (IR) or toxic gases (electrochemical).

  • Fixed gas detector XCD
  • Detection of combustible gases, CO, CO2, CH4, H2, H2S, O2
  • Power supply: 15.5 to 32 VDC with 4-20 mA relay output
  • Aluminium or IP 65 stainless steel housing
  • Approval: ATEX II 2G EExd ia d IIC T4
  • Integrated mounting plate with 3 mounting holes – 2 M20 cable gland entries
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Gas detector with display – XCD ATEX

ATEX gas detector with 4-20 mA linear output, display, 3 relays (alarm 1, alarm 2 and fault) and MODBUS communication. Detection of the combustible gases (IR or catalytic), CO2 (IR) or toxic gases (electrochemical).

Fixed gas detector XCD
  • Detection of combustible gases, CO, CO2, CH4, H2, H2S, O2
  • Power supply: 15.5 to 32 VDC with 4-20 mA relay output
  • Aluminium or IP 65 stainless steel housing
  • Approval: ATEX II 2G EExd ia d IIC T4
  • Integrated mounting plate with 3 mounting holes – 2 M20 cable gland entries
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H2S respirator - Hydrogen sulfide

In order to get proper respiratory protection against hydrogen sulfide, it is recommended to use an H2S respirator like a full face mask for short interventions. For longer exposition use a complete PAPR (powered air purifying respirator) for comfort and safety. Both devices have to be equipped with a type B filtering cartridges. A self-contained breathing apparatus (SCBA or airline system) is mandatory in case of concentrations exceeding 60 times the OEL.

The M20.2 is the world’s smallest emergency escape breathing device (or EEBD). Compact, lightweight and ergonomic, it can be easily belt-mounted.

  • emergency escape breathing device M20.2
  • On use / stand-by duration : 15-20 minutes / 32 minutes
  • Donning time : less than 10 seconds.
  • Compact and lightweight: 18.3 x 16.5 x 7.9 cm – less than 1 kg.
  • Can be refurbished after use.
  • Compressed oxygen air supply.
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Emergency escape breathing device M20.2

The M20.2 is the world’s smallest emergency escape breathing device (or EEBD). Compact, lightweight and ergonomic, it can be easily belt-mounted.

emergency escape breathing device M20.2
  • On use / stand-by duration : 15-20 minutes / 32 minutes
  • Donning time : less than 10 seconds.
  • Compact and lightweight: 18.3 x 16.5 x 7.9 cm – less than 1 kg.
  • Can be refurbished after use.
  • Compressed oxygen air supply.
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The X-plore 6300 is a respiratory protective full face respirator. Cost effective, this is an ideal solution for industrial applications, providing users comfort and air purifying performance.

  • The X-plore 6300 full face respirator, a single filter gas mask by Dräger
  • Universal size
  • Large field of view
  • Hypoalergenic material
  • Integrated ventilation system
  • Compatible with X-plore Rd 40 filter series
  • Additional information
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Full face respirator X-plore 6300

The X-plore 6300 is a respiratory protective full face respirator. Cost effective, this is an ideal solution for industrial applications, providing users comfort and air purifying performance.

The X-plore 6300 full face respirator, a single filter gas mask by Dräger
  • Universal size
  • Large field of view
  • Hypoalergenic material
  • Integrated ventilation system
  • Compatible with X-plore Rd 40 filter series
Additional information

The X-plore 6300 single filter gas mask is a respiratory protective device that has been especially designed for use in industrial environments.

Made of ultra-resistant and hypoalergenic EPDM elastomer, this full face respirator features a dual airtight seal for maximal reliability, comfort and safety. Cost-effective, this mask fits perfectly in any morphology and any face shape witout annoying its wearer.

The large facepiece visor is made of PMMA plexiglass (polymethyl methacrylate) and features a plastic frame to offer a large 180° field of view without distorsion and an outstanding panoramic view. This visor is also especially treated to be scratch resistant. Moreover, the X-plore 6300 mask is equipped with an integrated ventilation system in order to avoid presence of steam and condensation inside the full facepiece.

Thanks to its universal size and its 5-point specific harness, this respirator is very easy to don and to remove. The special design of its donning straps avoids any pressure on the head or the face of the user. This way, the X-plore 6300 can be worn during long periods of time without annoying the user. taille. Furthermore, thanks to this standard size and its low weight – approximately 500 grams – the X-plore 6300 single cartridge respirator is easier to carry and to store.

Lastly, this respiratory protective full face respirator is fully compatible with X-plore Rd 40 series filters. These filters feature universal 40 mm connector threads in compliance with the EN 148-1 European standard. These filters are especially designed to purify air from any contaminant that could be harmful for the user. This filter range provides reliable and efficient protection in any situation against toxic substances – gas or particles. Thus, the X-plore 6300 single filter gas mask can be equipped with a particle filter, a gas filter or a combined filter to respond to any demanding application.

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The Duraflow powered air respirator is a versatile solution for hazardous workspaces. It provides a quality respiratory protection for a fair price.

  • The powered air purifying respirator Duraflow PAPR
  • Compatibility with RD DIN 40 universal filter cartridges
  • Rechargeable battery – 2 available version: 8 or 16 hours runtime
  • Automatic airflow regulation (160l/min)
  • Visual alarms, notifications and display
  • CEN1294 & CE0086 certified, IP55/IP67
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Powered air purifying respirator Duraflow

The Duraflow powered air respirator is a versatile solution for hazardous workspaces. It provides a quality respiratory protection for a fair price.

The powered air purifying respirator Duraflow PAPR
  • Compatibility with RD DIN 40 universal filter cartridges
  • Rechargeable battery – 2 available version: 8 or 16 hours runtime
  • Automatic airflow regulation (160l/min)
  • Visual alarms, notifications and display
  • CEN1294 & CE0086 certified, IP55/IP67
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The X-plore 8000 is a powered air purifying respirator especially designed to provide a reliable and convenient respiratory protection solution. Fully modular, this system can operate for at least 4 hours with only one charge for safe applications.

  • The X-plore 8000 PAPR respirator system by Dräger enhanced positive pressure respirator
  • Rugged design for daily use
  • Modular and versatile
  • Comfortable and secured with rubber protectors
  • Easy to disassemble for easy servicing
  • Compatible with a large range of accessories
  • Additional information
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PAPR respirator system X-plore 8000

The X-plore 8000 is a powered air purifying respirator especially designed to provide a reliable and convenient respiratory protection solution. Fully modular, this system can operate for at least 4 hours with only one charge for safe applications.

The X-plore 8000 PAPR respirator system by Dräger enhanced positive pressure respirator
  • Rugged design for daily use
  • Modular and versatile
  • Comfortable and secured with rubber protectors
  • Easy to disassemble for easy servicing
  • Compatible with a large range of accessories
Additional information

The X-plore 800 PAPR respirator system has been especially designed to enable its user to operate safely in toxic environments. Thanks to its robust designIP65 certified against dust and water jets – this positive pressure air purifying respiratory protective device is particularly well-suited for use in potentially explosive atmospheres (ATEX).

The X-plore 8000 PAPR respirator system is composed by a rugged casing that can includes a whole range of specific PAPR filters in order to meet requirements of almost any industrial application. A breathing hose available in three different versions and a face piece (PAPR mask or hood) complete this system. The device can be worn with a special belt and can be equipped with a standard battery, which provides at least 4 hours run time, or a high capacity battery for an extended run time of at least 8 hours. The belt ensures optimal comfort of use and perfect weight balance. This positive pressure respirator has been especially engineered to fit perfectly the user without disturbance.

Available in standard version as well as ATEX certified fireproof version, the X-plore 8000 respirator features protected air inlets which ensure that no dust, water or even sparks come into contact with filters.

Thanks to its enhanced technology, the PAPR respirator system automatically detects the connected face piece in order to adjust the injected airflow. Integrated temperature and pressure sensors in the housing also enable the automatic adjustment of the airflow. A wide range of face pieces – PAPR hoods & masks - is available to meet even the most demanding requirements from any application. This way, the housing of the X-plore 8000 can be connected to half-hoods, full hoods, protective visors, helmets, half-masks, panoramic masks or even helmets specifically dedicated to welding activities.

The X-plore 8000 PAPR respirator also features a smart alarm system which purpose is to alert user in case of problems. This way, if the air flow is not sufficient or in case of low battery status, visual (operational display), acoustic (80 dBA at 1 meter) and vibrating alarms activate to alert user of the failure. Moreover, an integrated optical sensor avoids any use without a filter for an optimal safety of use.

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