Standards ČSN - Czech national standards - Page 6164

Glass testing. Chemical analysis of glass. Determination of silica in the presence of fluorides. Gravimetric method

Standard published on 31.7.1978

WITHDRAWN published on 31.3.1976

Glass testing. Chemical analysis of glass. Determination of boron trioxide. Volumetric method

Standard published on 31.3.1976

Glass testing methods. Chemical analysis of glass. Determination of boron trioxide. Volumetric method (after the separation with ion exchanger)

Standard published on 14.5.1990

Chemical analysis of glass. Determination of boric oxide. Volumetric method after precipitation with calcium carbonate

Standard published on 10.4.1990

WITHDRAWN published on 31.3.1976

Glass testing methods. Chemical analysis of glass. Determination of boron trioxide. Photometric method with azomethin H

WITHDRAWN published on 18.6.1986

Glass testing. Chemical analysis of glass. Determination of phosphorus pentoxide. Photometric method with molybdovanadic reagent

Standard published on 29.3.1991

WITHDRAWN published on 31.7.1978

Glass testing. Chemical analysis of glass. Determination of iron(III)-oxide. Photometric method with 2,2-bipyridine

Standard published on 31.3.1976