Gastec gas detector tubes utilise colorimeteric technology to produce a visual stain within the gas detecting tube. Gastec tubes are single-gas, single-use tubes which form a catalogue capable of measuring around 300 gases.
Short-term (Standard Gastec tubes) safely allow users to perform spot sampling and tests in industrial environments to detect hazardous and toxic gases, and chemical vapours.
Dosi-tubes are clipped into a dosi-tube holder which attaches to an item of clothing and worn over a working day or shift to calculate time-weighted average (TWA).
Gastec tubes can be a low-cost method of gas detection compared to other forms of gas measurement.
Gastec tubes are categorised into different tube types. Selection depends on their use. Download the Gastec guide for more information. Once you have selected the tube type, then you must choose which gas/vapour you need to measure. For the most popular gas such as Hydrogen Sulphide, there are thirteen different tube types so these are differentiated by measurement range. Compare tube measurement ranges by downloading the Gastec Brochure and Detector Tube List

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