Difluorochloromethane for tetrafluoroethylene production

WITHDRAWN published on 13.4.1988

Trifluorochloromethane

WITHDRAWN published on 13.4.1988

Celestite ores--Determination of strontium and calcium contents--EDTA volumetric method

WITHDRAWN published on 1.1.1988

Celestite ores--Determination of hygroscopic moisture content--Gravimetric method

WITHDRAWN published on 1.1.1988

Celestite ores--Determination of barium content--Barium chromate volumetric method

WITHDRAWN published on 1.1.1988

Celestite ores--Determination of sulphate content--Barium sulphate gravimetric method

WITHDRAWN published on 1.1.1988

Celestite ores--Determination of calcium and magnesium contents--Atomic absorption spectrometry

WITHDRAWN published on 1.1.1988

Celestite ores--Determination of silicon content--Molybdenum blum spectrophotometric method

WITHDRAWN published on 1.1.1988

Celestite ores--Determination of silicon content--Perchloric acid dehydration gravimetric method

WITHDRAWN published on 1.1.1988

Celestite ores--Determination of iron content--Sulphosalicylic acid spectrophotometric method

WITHDRAWN published on 1.1.1988