TEST METHOD FOR DETERMINING FLUORIDES Russian patent published in 1997 - IPC

Abstract RU 2093823 C1

FIELD: analytical methods. SUBSTANCE: essence of semiquantitative determination of fluorides in liquid media consists in successively impregnating paper by 0.16-0.2 g/l solutions of zirconyl and alizarin C followed by determining fluorides according to length of discolored zone obtained after passage of test liquid over (80-90)x(2-3) mm sheet of indicator paper. EFFECT: simplified procedure. 2 tbl

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RU 2 093 823 C1

Authors

Amelin V.G.

Dates

1997-10-20—Published

1995-07-11—Filed