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Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means
(AREA)
Abstract
Transparent tubes are filled with nonporous glass particles coated with a silica gel dust impregnated with a K2Cr2O2 - H2SO4 combination; the absorbed alcohol is determined colorimetrically (lengthwise), and the tube is provided with seal. This advantage consists in that the reagent does not penetrate into the nonporous carrier particles; the absorption of water is small.
NL7010628A1970-07-171970-07-17Tubes for quantitative determination of
NL7010628A
(en)
Improvements in or relating to methods of sealing glass exhaust tubes of vessels inwhich excess pressure prevails, the exhaust tube not having an appreciable contraction ora capillary portion