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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.

CAS VME (8 heures) VLE (15 minutes) LIE IP Densité / Air Filtre / ARI
200-846-2 5 ppm 10 ppm 4 % 10.49 eV 1.19 B

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.

VENTIS-MX4 portable gas detector that complies with ATEX standards. This detector can detect from 1 to 4 gases with a large range of sensor combinations (Explo 0-100% LEL, O2, CO, H2S, NO2, SO2).

  • Detection of Explo (0-100% LEL), O2, CO, H2S, NO2, SO2
  • Robust, shock-resistant and waterproof device (IP66 and IP67)
  • Enhanced visibility with safety orange overmold
  • Compact and lightweight: first multigas detector with a single-gas detector size
  • Optional slide-on sampling pump (up to 30 meters)
  • Additional information
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Portable 4 gas detector – VENTIS-MX4 – EXLO, O2, CO, H2S

VENTIS-MX4 portable gas detector that complies with ATEX standards. This detector can detect from 1 to 4 gases with a large range of sensor combinations (Explo 0-100% LEL, O2, CO, H2S, NO2, SO2).

Portable gas detector MX4-Ventis
  • Detection of Explo (0-100% LEL), O2, CO, H2S, NO2, SO2
  • Robust, shock-resistant and waterproof device (IP66 and IP67)
  • Enhanced visibility with safety orange overmold
  • Compact and lightweight: first multigas detector with a single-gas detector size
  • Optional slide-on sampling pump (up to 30 meters)
Additional information

The Ventis-MX4 is a portable multigas detector. Contrary to single-gas detectors, it can detect up to 4 gases. Thanks to its rechargeable Li-ion battery, it can continuously operate during around 12 hours at 20°C ambient temperature. This battery can be replaced by an optional extended battery for up to 20 hours of autonomy without pump.

The Ventis-MX4 portable gas detector can detect up to 4 gases amongst explosive gases, oxygen (O2), carbon monoxide (CO), hydrogen sulfide (H2S), sulfur dioxide (SO2) and nitrogen dioxide (NO2). A specific location is dedicated to the explo sensor (catalytic sensor) and the oxygen sensor (electrochemical sensor). A 4 gas unit will basically include oxygen and explo sensors.

The Ventis-MX4 features 3 different alarms. The first one is a powerful 95 dB at 30 cm audible alarm to alert in noisy environmets. A high visibility red LED visual alarm and an ultra- vibrating alarm are added to improve safety. Two alarm levels are configures: low and high alarms – which are basically calibrated under occupational safety at work data.

The Ventis-MX4 portable gas detector also features the same physical properties – dimension and weight – than a single-gas detector. It can be wore close to the breathing tracts thanks to its crocodile clip without disturbing the user. This multigas detector shock-resistant and waterproof thanks to its high visibility polycarbonate-made overmold.

As this device can detect explosive gases, it meets current EU ATEX standards (explosive atmosphere). A sampling pump – VSP for Ventis-MX4 – is available to draw remote samples (up to 30 meters) before interventions – e.g. in confined space.

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The toxic gas detector GasBadge Pro ATEX series with interchangeable sensor. With a competitive price, this ATEX portable gas detector with interchangeable sensor combines power and flexibility.

  • Detection of Cl2, ClO2, CO, HCN, H2, H2S, NH3, NO2, O2, PH3, SO2.
  • Segmented LCD display for easy and direct reading
  • Internal data logging of alarm events and gas concentrations
  • CR2 3V lithium battery; 2,600 hours minimum runtime
  • Polycarbonate robust and waterproof housing
  • Additional information
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Portable toxic gas detector GASBADGE PRO

The toxic gas detector GasBadge Pro ATEX series with interchangeable sensor. With a competitive price, this ATEX portable gas detector with interchangeable sensor combines power and flexibility.

Portable gas detector GasBadge Pro
  • Detection of Cl2, ClO2, CO, HCN, H2, H2S, NH3, NO2, O2, PH3, SO2.
  • Segmented LCD display for easy and direct reading
  • Internal data logging of alarm events and gas concentrations
  • CR2 3V lithium battery; 2,600 hours minimum runtime
  • Polycarbonate robust and waterproof housing
Additional information

The GASBADGE PRO toxic gas detector is a classic single-gas detector. Its long-duration battery operates for about 2,600 hours and can be replaced when used. As for any other classic single-gas detectors, it is highly recommended to calibrate the GASBADGE PRO twice a year to ensure proper operation.

The GASBADGE PRO toxic gas monitor is a classic single-gas detector with interchangeable sensors and features a large range of electrochemical sensors. This technology is designed to detect toxic gases: Cl2 (chlorine), ClO2 (chlorine dioxide), CO (carbon monoxide), HCN (hydrogen cyanide), H2 (hydrogen), H2S (hydrogen sulfide), NH3 (ammonia), NO2 (nitrogen dioxide), O2 (oxygen), PH3 (phosphine) and SO2 (sulfur dioxide).

The GASBADGE PRO has 3 alarms: a powerful 95 dB audible alarm to alert even in noisy environments, a red LED visual alarm for view alert signals even in the darkest places like confined spaces and a vibrating alarm.

These alarms will be triggered by 4 events: if the lower or the upper limit values are reached, if concentrations get over the occupational exposure limit or if the average value threshold is exceeded. Abnormal gas concentrations and other data can also be saved and downloaded from the device.

Compact and lightweight, the GASBADGE PRO toxic gas detector is made with a strong polycarbonate housing with a robust and waterproof over-mold in compliance with IP67 protection. The GASBADGE PRO is ATEX approved as well for explosive atmosphere under current EU standards.

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The Ventis Pro5 detector is equipped with new features such as a panic button to improve safety of workers evolving in hazardous areas.

Detection of the combustible gases, NH3, CO, CO/H2S, H2S, HCN, NO2, O2, SO2, CO2, HC.

  • Dimensions: 104 x 58 x 36 mm – weight: 200 grams without pump
  • Audible (95 dB), LED visual (2 red and 2 blue) and vibrating alarms
  • Rechargeable lithium-ion battery with optional extended battery
  • Polycarbonate housing with waterproof rubber overmold (IP68)
  • Datalogging over 3 months with 10 seconds interval
  • Additional information
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Portable multi gas detector – VENTIS PRO5 – up to 5 gases

The Ventis Pro5 detector is equipped with new features such as a panic button to improve safety of workers evolving in hazardous areas.

Detection of the combustible gases, NH3, CO, CO/H2S, H2S, HCN, NO2, O2, SO2, CO2, HC.

  • Dimensions: 104 x 58 x 36 mm – weight: 200 grams without pump
  • Audible (95 dB), LED visual (2 red and 2 blue) and vibrating alarms
  • Rechargeable lithium-ion battery with optional extended battery
  • Polycarbonate housing with waterproof rubber overmold (IP68)
  • Datalogging over 3 months with 10 seconds interval
Additional information

The Ventis Pro5 multi gas detector was especially designed to silmutaneously detect up to 5 gases among the combustible gases, NH3, CO, CO/H2S, H2S HCN, NO2, O2, SO2, CO2 and HC.

 

This flexible detector features a panic button to alert nearby teams when user is in distress. It also features a mandown alert function which is set to activate after a defined period of time without motion.

 

In case of anormal concentrations, powerful audible (95 dB à 10 cm) and visual (ultra-bright blue and red lights) alarms will alert any operator working in the area, even in high-noise and dark environments.

Custom alarm action messages like “EVACUATE” or “VENTILATE” can furthermore be configured in case of emergency situations in order to safely and quickly take corrective actions.

 

Made of polycarbonate with protective rubber overmold, this gas detector is available either in black or high-visibility safety orange versions and can be combined with the VSP slide-on pump. Its integrated data logger can record up to 3 months of events. Water and dust-resistant (IP68), the Ventis Pro5 can be used in pumped version for use in confined spaces or without pump as a personal protective equipment.

 

The Ventis Pro5 portable multi gas detector also features the LENS Wireless technology. LENS is the first wireless gas detection solution that allows personal monitors and area monitors to communicate gas readings and alarms with one another. This way, panic and mandown alarms will be communicated to other Ventos Pro detectors operating in the same area in order to alert everyone on the hazardous situations.

 

Lastly, the Ventis Pro5 benefits from the iAssign® technology for site and user follow-up. Thanks to this enhanced technology, every data recorded by the device will be assigned to the user ID. This process allows amongst other things users to wear several gas detectors within the same working day.

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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.

PROFILE40 is a single-cartridge half-mask featuring a DIN 40mm thread which complies with EN148-1 standard – related to respiratory protective half-masks

  • Compatible with every PRO2000 filter less than 300 grams
  • Robust LSR silicon facepiece with large face seal
  • Easy adjustable harness for device airtight
  • Particularly suitable with eyewear and safety glasses
  • Available in 2 different sizes
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Respiratory protective half-mask – PROFILE40

PROFILE40 is a single-cartridge half-mask featuring a DIN 40mm thread which complies with EN148-1 standard – related to respiratory protective half-masks

Demi-masque DIN40 PROFILE40
  • Compatible with every PRO2000 filter less than 300 grams
  • Robust LSR silicon facepiece with large face seal
  • Easy adjustable harness for device airtight
  • Particularly suitable with eyewear and safety glasses
  • Available in 2 different sizes
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The SARI gas mask provides operating comfort and efficient protection against toxic gases and particles (solid, radioactive, smokes), bacteria and virus.

  • Compatible with PRO2000 filter range (gas, particle and combined)
  • Central phonic membrane for easy communication
  • Compatible with powered air equipment
  • Internal mask with non-return and anti-fog valves, reduces CO2
  • Fully adjustable 5 points harness for improved operating comfort
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Full face gas mask – SARI

The SARI gas mask provides operating comfort and efficient protection against toxic gases and particles (solid, radioactive, smokes), bacteria and virus.

masque sari contre les gaz toxiques et vapeurs chimiques
  • Compatible with PRO2000 filter range (gas, particle and combined)
  • Central phonic membrane for easy communication
  • Compatible with powered air equipment
  • Internal mask with non-return and anti-fog valves, reduces CO2
  • Fully adjustable 5 points harness for improved operating comfort
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The Proflow2 PAPR is a compact and lightweight device featuring a curved backplate for user comfort during long-term applications. This powered air purifying respirator is available in 120L/min or 160L/min versions.

  • complete Scott Safety PAPR powered-air-purifying Proflow2
  • DIN40 standard filters compatible with single-cartridge masks.
  • From 7 to 15 hours runtime depending on the face piece.
  • 70 dB audible low battery alarm.
  • Compatible with many face pieces.
  • Certifications: complies with EN12941 and 12942 standards.
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Powered air purifying respirator PROFLOW 2

The Proflow2 PAPR is a compact and lightweight device featuring a curved backplate for user comfort during long-term applications. This powered air purifying respirator is available in 120L/min or 160L/min versions.

complete Scott Safety PAPR powered-air-purifying Proflow2
  • DIN40 standard filters compatible with single-cartridge masks.
  • From 7 to 15 hours runtime depending on the face piece.
  • 70 dB audible low battery alarm.
  • Compatible with many face pieces.
  • Certifications: complies with EN12941 and 12942 standards.
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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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