GB/T 38908-2020Test methods of chlorine resistance performance of household reverse osmosis and nanofiltration membrane elements (English PDF)
家用反渗透及纳滤膜元件耐氯性测试方法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
June 2, 2020
Implementation date
May 1, 2021
Scope
GB/T 38908-2020 is the English-translated version of 家用反渗透及纳滤膜元件耐氯性测试方法.
GB/T 38908-2020 is the Chinese standard "Test methods of chlorine resistance performance of household reverse osmosis and nanofiltration membrane elements".
Its scope clause reads: This standard specifies the principles, reagents, instruments, test procedures, and data processing of household reverse osmosis and nanofiltration membrane element chlorine resistance tests And test report.
This standard is applicable to the chlorine resistance test of various types of household reverse osmosis and nanofiltration membrane elements, and the resistance of other reverse osmosis and nanofiltration membrane elements Chlorine test can refer to the implementation. Its clauses include terms and definitions.
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Document preview — GB/T 38908-2020
National Standard of the People's Republic of China
- ICS
- 19.020
- Classification
- J 77
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 3.1 Chlorineresistancetimeofhouseholdreverseosmosismembraneele-
- 3.2 Chlorineresistancetimeofhouseholdnanofiltrationmembraneelements
- 3.3 Chlorine resistance of household reverse osmosis membrane elements of
- 3.4 Chlorine resistance of household nanofiltration membrane elements
1 Scope
This standard specifies the principles, reagents, instruments, test procedures, and data processing of household reverse osmosis and nanofiltration membrane element chlorine resistance tests
And test report.
This standard is applicable to the chlorine resistance test of various types of household reverse osmosis and nanofiltration membrane elements, and the resistance of other reverse osmosis and nanofiltration membrane elements
Chlorine test can refer to the implementation.
2 Normative references
The following documents are essential for the application of this document. For dated reference documents, only the dated version applies to this article
Pieces. For the cited documents without date, the latest version (including all amendments) applies to this document.
GB/T 6682 Analysis of laboratory water specifications and test methods
GB/T 14424-2008 Determination of residual chlorine in industrial circulating cooling water
GB/T 20103 Technical terms of membrane separation
GB/T 23954-2009 Reverse osmosis system membrane element cleaning technical specifications
GB/T 30306-2013 Domestic and similar drinking water treatment core
GB 34914-2017 Reverse osmosis water purifier water efficiency limit value and water efficiency grade
HY/T 113-2008 Nanofiltration membrane and its components
3 Terms and definitions
GB/T 20103, GB/T 14424-2008, GB/T 23954-2009, GB/T 30306-2013 and HY/T 113-2008
The defined and following terms and definitions apply to this document.
3.1 Chlorineresistancetimeofhouseholdreverseosmosismembraneele-
ments
Immersion in a solution with a specified free chlorine concentration, the removal rate of the hardness of the household reverse osmosis membrane element is reduced to 90% of the immersion time.
3.2 Chlorineresistancetimeofhouseholdnanofiltrationmembraneelements
Soaked in the solution with the specified free chlorine concentration, the desalination rate of the household nanofiltration membrane element for magnesium sulfate was reduced to 90% of the immersion time.
3.3 Chlorine resistance of household reverse osmosis membrane elements of
The product of free chlorine concentration and chlorine resistance time of household reverse osmosis membrane elements.
3.4 Chlorine resistance of household nanofiltration membrane elements
The product of free chlorine concentration and chlorine resistance time of household nanofiltration membrane elements.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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