GB/T 3143-1982
Active
GB/T 35925-2018
Active
National standards
GB/T 35925-2018 Determination of impurity fluorine ion in water soluble chemicals—Ion chromatography method
GB/T 35925-2018 Determination of impurity fluorine ion in water soluble chemicals—Ion chromatography method
Basic Information
Standard Code:
GB/T 35925-2018
Standard Type:
National standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Health, safety, and labor protection
ICS Name:
Chemical analysis
Publish Date:
2018-02-06
Implement Date:
2018-09-01
Pages:
8 pages
Scope
This standard specifies the ion chromatography method for determining the fluoride ion (F-) content in water-soluble chemical products. This standard is applicable to the determination of fluoride ion content in water-soluble chemical products with a fluoride ion content of ≤400 mg/kg. The quantitative limit for organic chemical products in this standard is 0.02 mg/kg, and the quantitative limit for inorganic chemical products is 4.0 mg/kg. This standard is not applicable to insoluble chemical products and chemical products with fluoride-containing main components.
Development Information
Referenced Standards
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