GOST 21138.7-1978
Chalk. Method for determination of ferric-aluminium sesquioxides mass fraction

Standard No.

GOST 21138.7-1978

Release Date

1978

Published By

RU-GOST R

Latest

GOST 21138.7-1978

Scope

This standard applies to natural chalk and establishes a weight method for determining the mass fraction of iron sesquioxides

GOST 21138.7-1978 Referenced Document

• GOST 1277-1975 Reagents. Silver nitrate. Specifications
• GOST 21138.0-1985 Chalk. General requirements for methods of analysis*， 1985-04-19 Update
• GOST 25336-1982 Laboratory glassware and equipment. Basic parameters and dimensions*， 1982-04-19 Update
• GOST 3760-1979 Reagents. Ammonia water. Specifications*， 1979-04-19 Update

GOST 21138.7-1978 history

• 1978 GOST 21138.7-1978 Chalk. Method for determination of ferric-aluminium sesquioxides mass fraction