Diffusion tubes are an inexpensive way of determining the chemical cause of the odour and are easy to use, requiring no specialist skills. Sampling periods are 2-4 weeks, and therefore the tubes are used to detect the long-term presence of hazardous Hydrogen sulphide gas. Hydrogen sulphide can be detected at low levels – detection limits are in the low parts per billion range.
Sources of Hydrogen sulphide pollution:
- Breakdown of organic materials – agriculture, sewage treatment, landfill, swamps.
- Waste treatment or disposal.
- Industrial – e.g. Paper mills.
- Natural gas.
Potential implications of Hydrogen sulphide (H2S) pollution:
- Unpleasant odour.
- Eye irritation.
- Respiratory irritation.
- Boundary monitoring of agricultural and industrial facilities, sewage treatment plants and landfills to test for potential odour problems.
- Indoor air monitoring in treatment facilities.
- Ambient air monitoring around natural sources.
- Indoor air monitoring to identify the cause of health complaints.
- DIF200RTU-RA – Hydrogen sulphide diffusion tube with analysis
- DIF1000 – Push-in plastic fixing clip
- DIF2000 – 360mm fixing strap
- DIF2001 – 760mm fixing strap
- DIFSHLTR-S – Shelter for up to 3 tubes (optional)
Analysis is carried out in our UKAS accredited laboratories. Results are provided within 10 working days or can be fast-tracked by arrangement.
- No power supply required
- Long-term monitoring
- Low limits of detection