GB/T 37617-2019 in English

VALID

Test methods for Zeta potential of nanofiltration membrane surface—Streaming potential measurement

Issued on:2019-06-04
Implemented on:2020-05-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $160.00
$156.00

Standard No:	GB/T 37617-2019
Document status:	VALID
Title in English:	Test methods for Zeta potential of nanofiltration membrane surface—Streaming potential measurement
Title in Chinese:	纳滤膜表面Zeta电位测试方法流动电位法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2019-06-04
Implemented on:	2020-05-01
Chinese Classification:	J77-Separating machinery
Professional Classification:	GB-National Standard
Related Keywords:	nanofiltration membrane surface streaming membrane surface nanofiltration membrane products nanofiltration membrane characterization technology membrane separation test scope applicable
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《GB/T 37617-2019纳滤膜表面Zeta电位测试方法流动电位法》由TC382（全国分离膜标准化技术委员会）归口，主管部门为国家标准化管理委员会。

Introduction

1. Background of standard formulation and analysis of technological evolution

GB/T 37617—2019 is a standardized document for the test method of Zeta potential on the surface of nanofiltration membranes, filling the gap in the field of nanofiltration membrane characterization technology in China. This standard is based on the streaming potential method, which indirectly reflects the Zeta potential of the membrane surface by measuring the potential difference generated by the flow of electrolyte solution in the capillary channel.

With the rapid development of membrane separation technology, the application scope of nanofiltration membranes has been continuously expanded, especially in the fields of water treatment and material separation. However, the charge characteristics of the membrane surface have an important influence on the performance of the membrane, so accurate testing of Zeta potential has become a key indicator for evaluating membrane quality. As an efficient and accurate method, the streaming potential method is widely used in the characterization of nanofiltration membranes.

2. Comparison of standard frameworks

Standard dimensions	GB/T 37617—2019	International similar standards	Industry application status
Test principle	Streaming potential method, based on double layer theory	International standards use similar methods	Widely used in water treatment and membrane separation
Test scope	Applicable to flat nanofiltration membranes and other membrane types	Covering a variety of membrane structures	Becoming a common test method in the industry
Instrument requirements	Online conductivity meter, pH meter and other special equipment	International advanced level	Promote the standardization of membrane testing technology

3. Implementation suggestions and application cases

Implementation suggestions:

Ensure that all instruments and equipment are calibrated before testing, especially conductivity meters and pH meters.
Strictly control test conditions, including temperature, pressure and flow parameters.
Record complete experimental data and conduct detailed data analysis to determine the isoelectric point of the membrane.

Application case:

A water treatment company used this standard to test its nanofiltration membrane products and found that when the pH value was 6, the Zeta potential on the membrane surface reached a peak, indicating that the separation performance of the membrane was optimal under this condition. This method optimized the operating conditions of the membrane and significantly improved the water treatment efficiency.

More samples: JJG 21-2008 JGJ 94-2008 YD/T 3934-2021

Sample only — not a preview of GB/T 37617-2019

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