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GB/T 38908-2020 English PDF

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US$259.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 38908-2020: Test methods for chlorine resistance performance of household reverse osmosis and nanofiltration membrane elements
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 38908-2020	259	Add to Cart	3 days	Test methods for chlorine resistance performance of household reverse osmosis and nanofiltration membrane elements	Valid

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Basic data

Standard ID: GB/T 38908-2020 (GB/T38908-2020)
Description (Translated English): Test methods for chlorine resistance performance of household reverse osmosis and nanofiltration membrane elements
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J77
Classification of International Standard: 19.020
Word Count Estimation: 14,186
Date of Issue: 2020-06-02
Date of Implementation: 2021-04-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 38908-2020: Test methods for chlorine resistance performance of household reverse osmosis and nanofiltration membrane elements

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Test methods for chlorine resistance performance of household reverse osmosis and nanofiltration membrane elements ICS 19.020 J77 National Standards of People's Republic of China Domestic reverse osmosis and nanofiltration membrane elements Chlorine resistance test method 2020-06-02 release 2021-04-01 Implementation State Administration of Market Supervision and Administration Issued by the National Standardization Management Committee

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard was proposed and managed by the National Separation Membrane Standardization Technical Committee (SAC/TC382). This standard was drafted by. Beijing Bishuiyuan Technology Co., Ltd., Sanda Membrane Technology (Xiamen) Co., Ltd., Time Wharton Technology Co., Ltd. Company, Foshan Midea Qinghu Water Purification Equipment Co., Ltd., Tianjin University, Guangzhou Institute of Advanced Technology, Chinese Academy of Sciences, Shandong Zhaojin Motian Co., Ltd., Delan Water Technology Co., Ltd., Hunan Aowei Environmental Protection Technology Co., Ltd., Beijing University of Chemical Technology, Hangzhou Chaona Water Purification Equipment Co., Ltd., Yantai Jinzheng Environmental Protection Technology Co., Ltd., Hangzhou Easy Film Environmental Protection Technology Co., Ltd., Tianjin Momentum Technology Co., Ltd., Nanjing Boshuiyi Membrane Technology Development Co., Ltd., Hangzhou Annuo Filtration Equipment Co., Ltd., Henan Huifeng Water Treatment Equipment Co., Ltd., Zhejiang Jinhuan Jing Technology Co., Ltd., Tianjin Polytechnic University, Tianjin Membrane Engineering Technology Co., Ltd. The main drafters of this standard. Xia Jianzhong, Zhang Caiyun, Yao Meng, Wang Siliang, Zhang Xin, Wang Zhi, Wang Xi, Fan Yunshuang, Wang Leyi, Zeng Fanfu, Lu Hongwei, Zhang Weidong, Zhong Yuebo, Li Yuebiao, Wang Yanfeng, Wang Chunhao, Li Junjun, Wu Jiaqi, Li Liangliang, Chen Kailai, Xu Yinong, Liu Yang, Wang Hanyi. Domestic reverse osmosis and nanofiltration membrane elements Chlorine resistance test method

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 householdresistanceofhouseholdreverseosmosismembraneelements 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. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 38908-2020_English be delivered?

Answer: Upon your order, we will start to translate GB/T 38908-2020_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 38908-2020_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 38908-2020_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.