Gas detector tube CF000121

Uniphos Dosimeter tubes are custom made to measure Time Weighted Average (TWA) gas concentrations over longer durations. The gas enters the dosimeter tube by the principle of natural diffusion. The sensing chemical in the dosimeter tube changes color if the target gas is present. The length of discoloration is proportional to the concentration of gas in ppm.hrs present in the area. This length of stain can be easily read against pre calibrated measurement scale printed on the tube. Uniphos dosimeter tubes are convenient, easy to use, pre calibrated tubes that come with a safe tube holder. Customers just have to break the tube and place it in the tube holder. After completion of the measurement period, remove the tube from the tube holder and read the gas concentration directly from the printed scale on the tube.