GAS232 Dichloroethane-1,2 Gastec Detector Tubes 1 - 39ppm


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Excl. VAT: £28.50 Incl. VAT: £34.20
Excl. VAT: £28.50 Incl. VAT: £34.20

Product Description


GAS232 Dichloroethane-1,2 Standard Gastec Detector Tubes

Gas detector tubes are glass tubes that are filled with chemical reagent that absorbs and reacts with the target gas or vapour being measured.

A colorimetric stain (a colour change) is created. For most tubes, the concentration is read directly from the pinpoint accurate measurement scale on each tube.

The Gastec detector tube system is comprised of a handheld Gastec air sampling pump and Gastec detector tubes.


Measuring Range

1 to 39 ppm

Sampling Rate

100ml/min (300ml)

Correction Factor


Sampling Time

2 minutes per pump stroke

Colour Change

White           Pale Purple

Reaction Principle

 ClCH2CH2Cl + CrO3 + H2S2O7          Cl2

Cl2 + 3,3’-Dimethylnaphthidine           Reaction product

Coefficient of Variation

15% (for 1 to 4 ppm), 10% (for 4 to 15 ppm)

Shelf Life

1 year

Corrections for
temperature & humidity

Temperature correction is necessary

Store tubes in the refrigerator to keep at 10ºC(50ºF) or below 

Calibration gas generation

Diffusion tube method


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