GB/T 657-2011 (English Version) PDF

Standard No.: GB/T 657-2011
Language: Chinese, Available in English version
Release Date: 2011
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 657-2011
Replace: GB/T 657-1993

Scope: This standard specifies the shape, specification, test, inspection rules, packaging and marking of ammonium molybdate tetrahydrate in chemical reagents. This standard applies to the inspection of ammonium molybdate tetrahydrate in chemical reagents.

GB/T 657-2011 Referenced Document

GB 15346 Chemical reagent.Packaging and marking*， 2012-12-31 Update
GB/T 601 Chemical reagent.Preparations of reference titration solutions*， 2016-10-13 Update
GB/T 602 Chemical reagent--Preparations of standard solutions for impurity
GB/T 603 Preparation of preparations and products used in chemical reagent test methods*， 2023-08-06 Update
GB/T 6682 Water for analytical laboratory use.Specification and test methods
GB/T 9728 Chemical reagent.General method for the determination of sulphate
GB/T 9738 Chemical reagent.General method for the determination of water insoluble matter
HG/T 3484 Chemical reagent.Standard of clear liquor,made from glass dust,and standard of transparence
HG/T 3921 Chemical reagent.Regulations for sampling and acceptance