Dosimeter tubes – also known as dosimetric detector tubes or dosi-tubes – operate quite differently. They are a time-weighted average measurement system (TWA) that monitors the average exposure to a gas on a defined period (usually 8 hours on a working day basis). At the end of the day, the average exposure value can be read on the tube in order to get an accurate readout of concentrations inhaled for some substances during a whole day. These dosimeter tubes are mainly used in the industry to measure exposure to exhaust gases or formaldehyde in paint workshops. They are also more and more used in the tertiary sector to analyze indoor air quality.
With the wich to daily increase safety, Gastec proposes many gas detector tubes related accessories. This range includes for example pyrolyzers that can thermally decompose refrigerant gases (freon) in order to accurately measure them. They also offer automatic sampling pumps for STEL and TWA measurements. Lastly, Gastec is the world first company to propose an analysis kit for compressed air filled in breathing air cylinders. This kit is composed by tubes that monitor major harmful substances in cylinders in order to ensure the air quality.
Gastec tubes recycling:
Concerned with climate and environmental compliance, Gasted developed easy to recycle gas detector tubes. This way, once a tube is used or expired, it shall be plunged into a huge volume of water for several hours (no more than 20 tubes for 5 liters of water) in order to dilute their chemical reagent. As concentrations of these chemical agents are very low, water can then be sewered and the tubes recycled as any other glass waste without threating humans or environment.