G - Physics – 01 – N
Patent
G - Physics
01
N
150/21
G01N 31/22 (2006.01)
Patent
CA 1157751
COLORIMETRIC DOSIMETER ABSTRACT OF THE INVENTION A gas dosimeter comprises a strip substrate coated or impregnated with a color-changing reagent; the strip is disposed lengthwise in a transparent tube, one end of which is openable and is spaced by a diffusion path from one end of the strip. When the dosimeter tube is opened and exposed to the atmosphere containing detectable gas, a color change develops lengthwise of the strip dependent on the dosage exposure to the gas.
385736
Mcconnaughey Paul W.
Mckee Elmer S.
Mine Safety Appliances Company
Sim & Mcburney
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