| abstract |
Indicator tube detects the presence, with a mimimum concn. of 5x10 power (-3) MG/L, of mixtures of 2,2'-dichlor-tri-ethylamine, methyl-bis-beta-chlor-ethylamine and 2,2',2-tri-chlor-tri-ethylamine. Tube contains a polyethylene insert (2), filler (3) contg. calcium chloride, and superimposed indicator layer (4) of a bismuth salt, pref. bismuth-iodide, and glass wool (5). |