Gas Range



Gastec Dosi-Tubes

The passive Dosi-tube shows a colour stain to determine how much hazardous gas a worker has been in contact with over the Time Weighted Average (TWA). Dosi-tubes are clipped into a dosi-tube holder (bought separately) which attaches to an item of clothing and worn over a working day or shift.

  • Simple-to-read – No chart or lab analysis required.
  • Next Day Delivery – Order before 2pm for next day delivery*.
  • Low-cost method – Low upfront cost, no calibration, and no lab testing cost.