GAS2A Carbon Dioxide Gastec Airtec Tubes 250 - 3000ppm


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GAS2A Carbon Dioxide

Why Buy Gastec Tubes from a1-cbiss?

Next Working Day Delivery - 95% of our Gastec Detector Tubes are held in refrigerated storage, so when ordering from a1-cbiss, you can expect fast delivery

Gastec Price Promise - We'll better any like for like competitors' offer. Provide us with a valid quote and we will beat it.

Low Price Gas Detection - Each pack of Airtec detector tubes is priced as low as £33.45


Excl. VAT: £35.00 Incl. VAT: £42.00
Excl. VAT: £35.00 Incl. VAT: £42.00

Product Description


GAS2A Carbon Dioxide Compressed Breathing Air Detector Tubes - Gastec Airtec Tubes

Used in conjunction with the a1-cbiss Breathing Air Quality Kit, Gastec Airtec Tubes are a convenient and simple system for testing air quality within gas cylinders, compressed breathing air and air lines in compliance with EN12021

When self-contained breathing apparatus are used for respiratory protection, the quality of the breathing air requires special attention.

Contaminants generated by the compressor or cylinder can be harmful to the worker and respiratory equipment.

Shelf Life - a1-cbiss will never dispatch detector tubes with less than 3 months remaining before expiry. a1-cbiss employ a stock rotation policy of first in, first out. Specific shelf life requirements must be identified at the point of order placement (use the comment box in the checkout process). The expiry date is printed clearly on the front of the detector tube packet.


Measuring Range

250 to 3000 ppm

Sampling Rate

100ml/min (500ml)

Correction Factor


Sampling Time

5 minutes

Colour Change

Orange Yellow         Yellow

Reaction Principle

CO2 + 2KOH           K2CO3 + H2O

Coefficient of Variation

10% (for 250 to 1000 ppm), 5% (for 1000 to 3000 ppm)

Shelf Life

Up to 2 years from point of manufacture

Corrections for
temperature & humidity


Store the tubes at cool and dark place. 

Calibration gas generation

High pressure gas cylinder method


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