Gastec Polytec System | Gas Sampling Pump & Polytec Tubes

The Gastec Polytec system consists of the Model GV-110S gas sampling pump and the Polytec tubes. The Polytec tubes are unique detector tubes, each having 1 to 8 reaction layers to determine multiple unknown substances in the sample simultaneously. When you pull the handle of the pump and wait for a predetermined sampling time, the colour(s) of the Polytec tube’s layer(s) change uniquely according to the contents of the sample. Five types of Polytec tubes are available:

Detailed descriptions are given in the instruction sheets included with individual Polytec tubes. If you already have the Model GV-110S gas sampling pump, you need only to obtain the desired Polytec tubes.

The table below details which substances each Gastec Polytec Tube is designed to measure.

	Polytec Tube
Substance	Polytec I	Polytec II	Polytec III	Polytec IV	Polytec V
Substance	No. 107	No. 25	No. 26	No. 27	No. 28
Acetone	✓
Acetylene	✓			✓	✓
Ammonia		✓	✓	✓
Benzene	✓
Butane			✓
Carbon Dioxide				✓	✓
Carbon Disulphide	✓
Carbon Monoxide	✓	✓		✓	✓
Chlorine		✓	✓	✓	✓
Diethylamine				✓
Ethylene	✓			✓	✓
Gasoline	✓		✓
Hydrogen		✓		✓	✓
Hydrogen Chloride		✓	✓	✓	✓
Hydrogen Cyanide					✓
Hydrogen Phosphide					✓
Hydrogen Sulphide	✓	✓	✓	✓	✓
LPG (Liquefied Petroleum Gas)			✓
Mercaptans		✓
Methyl Mercaptan				✓	✓
Nitrogen Dioxide		✓	✓	✓	✓
Olefin HCs		✓
Phosgene					✓
Phosphine				✓
Propane	✓
Propylene	✓			✓	✓
Styrene	✓
Sulphur Dioxide		✓	✓	✓	✓
Toluene	✓
Trichloroethylene	✓
Xylene	✓

When you pull the handle of the pump and wait for a predetermined sampling time, the colour(s) of the Polytec tube’s layer(s) change uniquely according to the contents of the sample.

Five types of Polytec tubes are available: