|
US$259.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 38949-2020: Determination of pore size for porous membranes - Standard particle method
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 38949-2020 | English | 259 |
Add to Cart
|
3 days [Need to translate]
|
Determination of pore size for porous membranes - Standard particle method
| Valid |
GB/T 38949-2020
|
PDF similar to GB/T 38949-2020
Basic data | Standard ID | GB/T 38949-2020 (GB/T38949-2020) | | Description (Translated English) | Determination of pore size for porous membranes - Standard particle method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J77 | | Classification of International Standard | 71.040.01 | | Word Count Estimation | 14,190 | | 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 38949-2020: Determination of pore size for porous membranes - Standard particle method---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.
Determination of pore size for porous membranes - Standard particle method
ICS 71.040.01
J77
National Standards of People's Republic of China
Standard particle method for determination of pore size of porous membrane
2020-06-02 release
2021-04-01 Implementation
State Administration of Market Supervision and Administration
Issued by the National Standardization Management Committee
Contents
Foreword Ⅲ
1 Scope 1
2 Normative references 1
3 Terms and definitions 1
4 Test principle 2
5 Reagents and instruments 2
6 Test Step 2
7 Test report 3
Appendix A (informative appendix) National Grade 1 particle size reference material 4
Appendix B (informative appendix) National Grade II particle size reference material 5
Appendix C (Normative Appendix) Porous Membrane Test Device 6
Appendix D (informative appendix) Standard particle mass concentration test method 7
Appendix E (informative appendix) Test example of average pore size of porous membrane 8
Reference 9
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. Tianjin Institute of Seawater Desalination and Comprehensive Utilization, Ministry of Natural Resources, Hangzhou Annuo Filtration Equipment Co., Ltd., Sanda
Membrane Technology (Xiamen) Co., Ltd., Tianjin University of Technology, Shandong Zhaojin Motian Co., Ltd., Yantai Jinzheng Environmental Protection Technology Co., Ltd., Guangzhou
Institute of Advanced Technology, Chinese Academy of Sciences, Suzhou Lisheng Water Purification Technology Co., Ltd., Tianjin Membrane Membrane Technology Co., Ltd., Ningbo Shuiyi Membrane
Technology Development Co., Ltd., Shanghai Yiming Filtration Technology Co., Ltd., Zhejiang Jin Membrane Environmental Technology Co., Ltd., Tianjin Membrane Membrane Engineering Technology
Limited company.
The main drafters of this standard. Zhang Yanping, Pan Xianhui, Li Zongyu, Wang Xuliang, He Benqiao, Fan Yunshuang, Zhang Junwei, Chen Huiying, Wang Leyi,
Li Yuebiao, Wang Xi, Chen Chen, Hu Xiaoyu, Shen Liqiang, Wu Changfei, Sun Wenting, Xu Yinong, Wang Hanyi, Ma Lanyun.
Standard particle method for determination of pore size of porous membrane
1 Scope
This standard specifies the principles, reagents, instruments and methods for determining the pore size of porous membranes using the standard particle method.
This standard is applicable to the determination of the average pore diameter of porous membranes such as hollow fiber, flat, and tube.
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 20103-2006 Technical terms of membrane separation
3 Terms and definitions
The terms and definitions defined in GB/T 20103-2006 and the following apply to this document. For ease of use, the following list is repeated
Some terms and definitions in GB/T 20103-2006.
3.1
Membrane
A thin barrier with certain physical or chemical characteristics on the surface, which makes a discontinuous interval between two adjacent fluid phases and affects the flow
The penetration rate of the various components in the body.
[GB/T 20103-2006, definition 2.1.1]
3.2
Porous membrane porousmembrane
Membrane with porous and open structure.
[GB/T 20103-2006, definition 2.1.19]
3.3
Pore diameter
The nominal diameter of the membrane pores.
[GB/T 20103-2006, definition 2.1.31]
3.4
Mean pore size
The average value of the pore size of the membrane surface.
[GB/T 20103-2006, definition 5.1.6]
3.5
Standard particle
Spherical particles with uniform particle size distribution and stable physicochemical properties can be used as "gauges" for measuring the pore size of porous membranes.
3.6
Crossflowmembraneprocess
The pressure pushes the feed material to flow parallel to the membrane surface (tangential flow), while the permeate flows vertically through the membrane (vertical flow) separation process.
Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 38949-2020_English be delivered?Answer: Upon your order, we will start to translate GB/T 38949-2020_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 38949-2020_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 38949-2020_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+ countriesQuestion 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 [email protected]. 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.
|