GB 1257-2007 (English Version) PDF

Standard No.: GB 1257-2007
Language: Chinese, Available in English version
Release Date: 2007
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB 1257-2007
Replace: GB 1257-1989

Scope: This standard stipulates the properties, specifications, tests, inspection rules, packaging and signs of the working standard reagent - potassium hydrogen phthalate. This standard is applicable to the inspection of working reference reagent for titration analysis—potassium hydrogen phthalate.

GB 1257-2007 Referenced Document

GB 10737 Working chemical.General rules for assay.Weight titration (potentiometric method)
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*， 2008-05-15 Update
GB/T 9723 Chemical reagent.General rule for flame atomic absorption spectrometric analysis
GB/T 9724 Chemical reagent.General rule for the determination of pH
GB/T 9729 Chemical reagent.General method for the determination of chloride
GB/T 9738 Chemical reagent.General method for the determination of water insoluble matter*， 2008-05-15 Update
GB/T 9739 Chemical reagent.General method for the determination of iron
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