GB/T 3143-1982
Active
GB/T 6909-2008
Replaced
National standards
GB/T 6909-2008 Analysis of water used in boiler and cooling system—Determination of hardness
GB/T 6909-2008 Analysis of water used in boiler and cooling system—Determination of hardness
Basic Information
Standard Code:
GB/T 6909-2008
Standard Type:
National standards
Standard Status:
Replaced
is_force_gb:
no
CCS Name:
Basic standards and general methods for water treatment agents
ICS Name:
Chemical analysis
Publish Date:
2008-04-01
Implement Date:
2008-09-01
Pages:
5 pages
Scope
This standard is applicable to the determination of hardness in natural water, cooling water, softened water, the effluent from H-type cation exchangers, and boiler feedwater samples.
Development Information
Replace the following standards
Superseded by the following standards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 4472-1984
Replaced
GB/T 4472-1984 General rule for determination of density and relative density for chemical products
GB/T 4946-1985
Replaced
GB/T 4946-1985 Terms of gas chromatography
GB/T 5274-1985
Replaced
GB/T 5274-1985 Gas analysis—Preparation of calibration gas mixtures—Weighing methods
GB/T 5831-1986
Replaced
GB/T 5831-1986 Determination of trace oxygen in the gases—Colorimetric method
GB/T 5832.2-1986
Replaced