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SKU: GAS233 Categories: ,

GAS233 Chloropicrin Gastec Detector Tubes 0.045 – 22ppm

£29.95
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£35.94
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SKU: GAS233 Categories: ,

Description

GAS233 Chloropicrin Gastec Detector Tubes 0.045 to 22ppm

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.

This makes this form of monitoring ideal for spot sampling as it can be more accurate then electronic gas detectors.

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

Performance

Measuring Range 0.045 to 22 ppm
Sampling Time 2 mins per pump stroke
Detecting Limit 0.03 ppm (n=2)
Colour Change White  Yellow
Reaction Principle CCl3NO2 + I2O5 + H2S2O7 → COCl2
COCl2 + (CH3)2NC6H4CHO → (CH3)2NC6H4CHCl2 + CO2
(CH3)2NC6H4CHCl2 + (C6H5)2NH→ Reaction product
Coefficient of Variation 10% (for 0.1 to 3.0 ppm), 5% (for 3.0 to 10.0 ppm)
Shelf Life Up to 1 year from point of manufacture
Corrections for
temperature & humidity
Unnecessary
Store the tubes in the refrigerator to keep at 10oC (50oF) or below.

 

Possible coexisting substances and their interferences
Substance Concentration Interference Change colour by itself
Ammonia   No effect No discoloration by itself
Carbon Dioxide No effect No discoloration by itself
Carbon Monoxide 10ppm No discoloration by itself
Ethylene Oxide   No effect No discoloration by itself
Formaldehyde   No effect No discoloration by itself
Hydrogen Cyanide   No effect No discoloration by itself
Bromomethane 2ppm + Yellow ( 2 ppm)
Phosphine No effect No discoloration by itself
Sulphuryl Fluoride No effect No discoloration by itself
1,2-Dichloroethane No effect No discoloration by itself
Benzene No effect No discoloration by itself
Toluene   No effect No discoloration by itself
Calibration gas generation Diffusion tube method
TLV-TWA TLV-STEL Explosive range
0.1 ppm(2013)

Additional Information

Weight 0.1 kg
Multi Gas Tags

Gas Range

Brand

Configuration

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