The Gastec precision pump (GV-100S) and Gastec Precision Pump with a counter (GV-100S) is designed specifically to be used with Gastec standard and polytec tubes. Using this range you can monitor up to 600 gases and vapours.

The Gastec precision pump and Gastec Precision Pump with a counter can precisely collect a sample volume for a detector tube. The full-stroke (100ml) and the half stroke (50ml) positions are marked exactly by the red line on the pump shaft, and the handle is precisely locked at those positions. If you pump fully n times by allowing for sampling time intervals, a volume of 100ml x n can be sampled. Each detector tube is calibrated based upon a prescribed (standard) volume of sample. Also the pump piston has been designated with a smaller diameter so the handle can be pulled out with even less effort. The Gastec precision pump design proves you with advanced and non sparking design and superior features.