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Hydrogen Sulphide (H2S)

Hydrogen Sulphide (H2S)

Hydrogen sulfide (H2S) is a colourless gas with a characteristic odour of rotten eggs which being denser than air may pool in low areas in still conditions.

people are normally exposed to hydrogen sulphide in air by breathing it in or by skin/eye contact. Any absorbed hydrogen sulphide does not accumulate in the body as it is rapidly metabolised in the liver and excreted in the urine. Hydrogen sulphide usually breaks down in air in about 3 days and is dispersed by wind.

If the smell of hydrogen sulphide is strong or you are concerned about its impacts on your amenity or health, you can reduce exposure by:

  • avoiding areas that are known sources of hydrogen sulphide
  • keeping windows closed when the odour outdoors is noticable and opening doors and windows once the outdoor odour has subsided
  • not excersising outdoors when the smell is present, particulalry if your breathing rate increases

If the sulphide is being generated by human activities then apporpriate management of those activities may help adress the problem at source. For instance industrial emissions might be dealt with through process or engineering controls such as contrainment or filter ventilation.

When bore water is contaminated with hydrogen sulphide it is sometimes possible to treat the bore with an agent wich removes iron from the water and therefore interferes with bacterial activity which happens to generate the gas.

Water treatment companies can advise on suitable agents.

Use of hydrogen sulphide impacted water for irrigation purposes has the potential to release considerable amounts of gas, as mentioned above. Methods for reducing odour impacts include the following:

  • decreasing the quantity of water used
  • using drippers or delivery devices which are low to the ground and have large droplet size
  • watering when there is sufficient wind to disperse the odour
  • watering at night when there are fewer people around, if wind is sufficient
  • desynchronizing with other similar bore water use


Compatible products

  • Single gas

  • Cost effective

SST1: 2 & 3 year model icon arrow

The SST1 single gas detector provides up to three years of maintenance-free operation and is available in H2S, SO2, CO or O2 (2-year only) models.

  • Low costs of ownership

  • Single gas

PDM icon arrow

The disposable PDM is a full-featured single gas detector that offers you unequalled value. The PDM single gas detector is your daily monitor for hazardous environments, because of its high reliability and user-friendliness.

  • Sustainable

  • Single gas

PDM+ icon arrow

The PDM+ is a personal sustainable single gas detector designed to detect Oxygen deficiency and the presence of toxic gas in the ambient environment.

UNI DISPOSABLE Low Total Costs Of Ownership Single Gas Detector
  • Low costs of Ownership

  • Single gas

UNI Disposable icon arrow

The UNI Disposable is a disposable and low cost of ownership, version of UNI Sustainable single gas detector. It detects H2S (Hydrogen Sulphide), CO (Carbon Monoxide), and O2 (Oxygen) in your selection of models for operation life of 12-months and 36-months.

  • Sustainable

  • Single gas

UNI Sustainable icon arrow

The UNI Sustainable is a sustainable single gas detector that offers a simple portable solution for a wide array of toxic gases and O2 (oxygen) applications.

  • Versatile

  • Multi gas

QGM icon arrow

The WatchGas QGM is a versatile multi-gas monitor engineered to keep you and your staff safe while working in hazardous environments.

  • Many sensor options

  • Multi gas

POLI icon arrow

The WatchGas POLI in pumped version is an advanced instrument with an integrated pump that enables a full range of sensors for a variety of applications, including confined space entry.

NEO High-End Photo Ionization Detector
  • VOC

  • PPB detection

NEO icon arrow

The NEO is one of the most advanced handheld VOC (Volatile Organic Compound) monitors available for ppb (parts per billion) detection.

safe area monitor
  • Safe area solution

  • Transportable

AirWatch Mk1.2 icon arrow

The AirWatch is your safe area solution for the monitoring of various gases. Based on the measurement values and alarms, equipment is switched on or off, data is logged and optionally employees are remotely informed of the gas concentrations present.

gas sensor
  • Wide range of sensors

  • Versatile

XDI icon arrow

The XDI-F1 Gas Sensor is capable of utilizing a wide range of sensor cell types offering an unmatched number of gases that may be monitored. Standard 4~20mA signaling with CANbus address enables the sensors to be networked via the WatchGas Combi control system or customer preferred monitoring systems.

Explosion proof gas detector
  • Wide range of sensors

  • Versatile

XDIwin icon arrow

The XDI gas sensor is capable of utilizing a wide range of sensor cell types offering an unmatched number of configurations allowing for a simple stand-alone 4~20mA transmitter

15J(win) / 30J(win) gas transmitter
  • Gas sensor

  • Gas transmitter

15J(win) / 30J(win) icon arrow

The 30J enclosure has been designed to allow quick and easy access to its interior by adjustment of two allen screws, this factor is a major consideration when large system service and calibrations are being carried out.