Gastec Gas Detector Tubes

Gastec Gas Detector Tubes

Gastec Gas Detector Tubes Explained

Gastec gas detector tubes utilise colorimetric 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 provide a number of benefits over electronic gas detecting instrumentation. Detector tubes are a low-cost method of gas detection compared to other forms of gas measurement particularly for gases that are normally only recognised by using sophisticated technology such as PID. Detector tubes don't require servicing and can be used in hazardous areas. 

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

*Prices advertised are 'web only' prices


When searching for gas detector tubes that are most suitable for your carrying out your gas measurements, then the Gastec gas detector tubes are the answer. The Gastec range of detector tubes has more tube types than any other competitor – there are over 500 to choose from. For the most popular gas such as Hydrogen Sulphide, there are thirteen different tube types. Gastec offer such a wide choice because each tube has a different measuring range. Choosing the correct range allows your gas measurements to be more accurate. Download our Gastec Brochure and Detector Tube List

Easy to Buy

Buying Gastec tubes from a1-cbiss couldn’t be easier. If you need any advice or prefer to speak over the phone, we have a large team of sales and customer service advisors here at head office to assist. You can place your order over the phone too. Call +44(0)151 321 0275. You can email your order which goes directly to our sales and customer service team – Alternatively, you can buy online from our website. Our website features every Gastec product and includes access to the datasheets, case studies, application notes and hints & tips.

*Prices advertised are 'web only' prices

Cost-Effective Gas Detection

Whilst the Gastec tube system is the most cost-effective method of gas detection, for first-time buyers, we sell a Starter Kit which makes it cheaper to begin using the Gastec detector tube system. The starter kit includes a Gastec pump, 5 packets of tubes, Gastec handbook, EH40 guide and a carry case.

Same Day Dispatch

99% of our detector tubes are held in stock so customers can benefit from same day dispatch if orders are placed before 2pm*. For the majority of UK customers, orders can be delivered for the next working day. For European countries, please allow for an extra day or two for delivery. 

Gas Types

Gastec detector tubes measure more than 300 different kinds of gases and vapours including the following most popular gases:

  • Acetaldehyde
  • Acetic Acid
  • Acetone
  • Ammonia
  • Benzene
  • Bromine
  • Carbon Dioxide
  • Fluorine
  • Formaldehyde
  • Hydrogen
  • Hydrogen Chloride
  • Hydrogen Cyanide
  • Hydrogen Sulphide
  • MEK-Methyl Ethyl Ketone
  • Mercaptans
  • Nitrogen Dioxides
  • Oxygen
  • Phosphine
  • Styrene
  • Sulphuric Acid
  • Xylene

 *For same day dispatch, subject to conditions.

Got a question about GastecRead our FAQ's or contact a1-cbiss with any questions