SN/T 4779.3-2017Determination of total hardness in bottled water for export. Method by spectrophotometry coupled with flow injection analysis(FIA) (English PDF)
出口瓶装水中总硬度的测定 流动注射 可见分光光度法
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Issued by
The General Administration of Quality Supervision, Inspection and Quarantine
Level / Type
National · Recommended
Issue date
May 12, 2017
Implementation date
December 1, 2017
Scope
SN/T 4779.3-2017 is the English-translated version of 出口瓶装水中总硬度的测定 流动注射 可见分光光度法.
SN/T 4779.3-2017 — This part of SN/T 4779 specifies a flow injection visible spectrophotometric method for the determination of total hardness in outlet bottled water.
This section applies to the determination of the total hardness of packaged drinking water and natural mineral water.
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Document preview — SN/T 4779.3-2017
National Standard of the People's Republic of China
- Classification
- C 53
Issued by: The General Administration of Quality Supervision, Inspection and Quarantine
Contents
- Document data1
Document data
Chinese classification (CCS): C53.
Estimated length of the Chinese original: 7,770 words.
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 5 pages — is available in the English PDF.
Referenced standards
Normative references
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Related Standards
GB/T 6682-2008 — Water for analytical laboratory use - Specification and test methods
SN/T 4779.1-2017 — Determination of fluoride in bottled water for export--Method by ion selective electrode flow injection analysis
SN/T 4779.2-2017 — Determination of chloride in bottled water for export--Method by ion selective electrode flow injection analysis
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SN/T 4779.3-2017
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