Hydrogen Cyanide dositube, 1 - 200 ppm, 10/box

     No pump required!   Just snap off the pre-scored end and position the dositube in a specific location or clip it to a shirt collar or pocket using the optional Dositube Holder. 

     The length-of-stain color change, forming over the next several hours, can be read directly off the scale printed on the side of the tube--as easy as reading a ther mometer.  Divide the reading by the hours of exposure to get a time-weighted average (TWA) concentration of Hydrogen Cyanide gas in parts-per-million (ppm). 

     Dosimeter tubes require no pumps, paper charts, secondary operations, or lab analyses-- save time and money!

• Easy to use
• No special expertise needed
• Instructions included
• Each tube precisely calibrated and ready to use
• No additonal pumps or equipment required
• Approximate shelf life, 2 years
• Tubes ship factory-direct for freshest product possible