GB/T 2921-1982
Abolished
GB 6851-2008
Active
National standards
force_standard
GB 6851-2008 pH Primary reagent—General rules for certification
GB 6851-2008 pH Primary reagent—General rules for certification
Basic Information
Standard Code:
GB 6851-2008
Standard Type:
National standards
Standard Status:
Active
is_force_gb:
yes
CCS Name:
Chemical reagents
ICS Name:
Chemical reagents
Publish Date:
2008-06-18
Implement Date:
2009-06-01
Pages:
11 pages
Scope
This method is suitable for measuring the pH value of pH reference reagents (at 25℃) using a double hydrogen electrode with a liquid-junction interface battery.
Development Information
Replace the following standards
Referenced Standards
GB/T 601-2002 Chemical reagent Preparations of standard volumetric solutions
GB/T 601-2016 Chemical reagent—Preparations of reference titration solutions
GB/T 603-2002 Chemical reagent—Preparations of reagent solutions for use in test methods
GB/T 603-2023 Chemical reagent—Preparations of reagent solutions for use in test methods
GB/T 6682-1992 Water for analytical laboratory use—Specification and test methods
GB/T 6682-2008 Water for analytical laboratory use—Specification and test methods
Related Standards
GB/T 2922-1982
Abolished
GB/T 2922-1982 Chemical reagents—Determination of specific surface area of solid supports used in chromatography
GB/T 3914-1983
Replaced
GB/T 3914-1983 Chemical reagents—The general rules of anodic stripping voltammetry
GB/T 673-1984
Replaced
GB/T 673-1984 Chemical reagent—Arsenic trioxide
GB/T 1263-1986
Replaced
GB/T 1263-1986 Chemical reagent—Disodium hydrogen phosphate dodecahydrate
GB/T 1292-1986
Replaced