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Determination of water vapour transmission rate for plastics film and sheeting - Part 4: Gas chromatographic method
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Basic data
| Standard ID | GB/T 43019.4-2025 (GB/T43019.4-2025) |
| Description (Translated English) | Determination of water vapour transmission rate for plastics film and sheeting - Part 4: Gas chromatographic method |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | G31 |
| Classification of International Standard | 83.140.10 |
| Word Count Estimation | 14,193 |
| Date of Issue | 2025-10-05 |
| Date of Implementation | 2026-05-01 |
| Issuing agency(ies) | State Administration for Market Regulation and Standardization Administration of China |
GB/T 43019.4-2025: Determination of water vapour transmission rate for plastics film and sheeting - Part 4: Gas chromatographic 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.
ICS 83.140.10
CCSG31
National Standards of the People's Republic of China
Determination of water vapor transmission rate of plastic films and sheets
Part 4.Gas Chromatography
Published on 2025-10-05
Implemented on May 1, 2026
State Administration for Market Regulation
The State Administration for Standardization issued a statement.
Table of contents
Preface III
Introduction IV
1.Scope 1
2 Normative References 1
3.Terms and Definitions 1
4.Principle 1
5 Samples 1
6.Sample Conditioning 2
7 Instruments 2
7.1 Overview 2
7.2 Permeation Chamber 2
7.3 Gas Chromatograph 3
7.4 Gas Flow Meter 3
7.5 Humidity controller (including water tank unit) 3
7.6 Vacuum Pump 3
8.Test conditions 3
9.Calibration Figure 3
10.Experimental Steps 4
11 Calculation 4
12.Experimental Results 4
13 Precision 5
14 Test Report 5
References 6
Foreword
This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents".
Drafting.
This document is Part 4 of "Determination of Water Vapor Transmission Rate of Plastic Films and Sheets".
The following sections of the measurement have been published.
---Determination of water vapor transmission rate of plastic films and sheets using humidity sensor method (GB/T 30412-2013);
---Determination of water vapor transmission rate of plastic films and sheets using infrared sensors (GB/T 26253-2010);
---Determination of water vapor transmission rate of plastic films and sheets by electrolytic sensor method (GB/T 21529-2008);
---Determination of water vapor transmission rate of plastic films and sheets - Part 5.Pressure sensor method (GB/T 43019.5-2023);
---Determination of water vapor transmission rate of plastic films and sheets - Part 7.Calcium corrosion method (GB/T 43019.7-2023).
This document is equivalent to ISO 15106-4.2008 "Determination of water vapor transmission rate of plastic films and sheets — Part 4.Gas chromatography"
Spectral method.
The following minimal editorial changes have been made to this document.
---To harmonize with existing standards, the standard title has been changed to "Determination of Water Vapor Transmission Rate of Plastic Films and Sheets - Part 4.Gas Phase".
Chromatography.
Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.
This document was proposed by the China National Light Industry Council.
This document is under the jurisdiction of the National Technical Committee on Standardization of Plastic Products (SAC/TC48).
This document was drafted by. Zhongfu Testing Services (Hebei) Co., Ltd., Anhui Jintian High-Tech Materials Co., Ltd., and Xiong'an Liya Technology.
Limited Liability Company, Dalian Product Quality Inspection and Testing Research Institute Co., Ltd., Hebei TEDA Packaging Materials Co., Ltd., Guangzhou Biaoji Packaging Equipment Co., Ltd.
Limited Liability Company, Hebei Guorun Pharmaceutical Packaging Materials Co., Ltd., Jinan Sike Testing Technology Co., Ltd., and Fuhe Instrument Technology (Shanghai) Co., Ltd.
The company, Jinan Saicheng Electronic Technology Co., Ltd., Beijing Plastics Products Quality Supervision and Inspection Station Co., Ltd., and Jinan Sanquan Zhongshi Experimental Instruments
Limited Liability Company, Wuhan Tianhong Paper & Plastic Printing Co., Ltd., Shaoxing Quality and Technical Supervision and Inspection Institute, Dalian Plastics Research Institute Co., Ltd., Zhejiang
Kaicheng New Materials Co., Ltd., Shanxi Jingui Plastics Manufacturing Co., Ltd., Yixiaoer Technology (Changzhou) Co., Ltd., Shenzhen Kehongjian Technology
Limited Liability Company, Hebei Industrial Vocational and Technical University, Duncheng Technology (Xiong'an) Co., Ltd., Zhejiang Jingliang New Material Technology Co., Ltd., Shenzhen An
Bao Medical Infection Control Technology Co., Ltd., Guangzhou Shenwei New Material Technology Co., Ltd., Shenzhen Institute of Metrology and Quality Inspection, Anhui Province
Product Quality Supervision and Inspection Institute, Guangdong Langmei New Materials Co., Ltd., Hubei Provincial Product Quality Supervision and Inspection Institute, Guangdian Metrology and Testing Group
Group Co., Ltd.
The main drafters of this document are. Yuan Liguo, Xie Bin, Jiang Hao, You Xinyong, Wang Junlei, Shao Dehua, Xiao Jun, Wang Xiaodong, Shen Feng, and Peng Yongjie.
Meng Fanxu, Chang Haichao, Chu Jinwei, Liu Demao, Chen Di, Wang Hao, Zhang Muqing, Huang Kaisheng, Yao Bangben, Hao Liangang, Wang Jiali, He Yihua, Shi Zhongping,
Zhang Yanbo, Lian Qun, Chen Rujun, Han Yongjun, Lü Hongxiang, Wang Zhaozhong, Yuan Huiya, Jia Hongwei, Guo Senlang, Wang Haiying.
Introduction
"Determination of Water Vapor Transmission Rate of Plastic Films and Sheets" is a standard for determining the water vapor transmission rate of plastic films and sheets, applicable to films with barrier properties.
The performance standards for various plastic films and sheets provide support and are proposed to consist of seven parts.
---Determination of Water Vapor Transmission Rate of Plastic Films and Sheets using a Humidity Sensor Method. The aim is to determine the water vapor transmission rate of plastic films and sheets using a humidity sensor method.
Water vapor transmission rate of thin films and sheets.
---Determination of Water Vapor Transmission Rate of Plastic Films and Sheets using Infrared Sensors. The aim is to determine the water vapor transmission rate of plastic films and sheets using infrared sensors.
Water vapor transmission rate of thin films and sheets.
---Determination of Water Vapor Transmission Rate of Plastic Films and Sheets by Electrolytic Sensor Method. The aim is to determine the water vapor transmission rate of plastic films and sheets using an electrolytic sensor method.
Water vapor transmission rate of thin films and sheets.
---Determination of Water Vapor Transmission Rate of Plastic Films and Sheets, Part 4.Gas Chromatography. The purpose is to determine the water vapor transmission rate of plastic films and sheets using gas chromatography.
Determine the water vapor transmittance of plastic films and sheets.
---Determination of Water Vapor Transmission Rate of Plastic Films and Sheets, Part 5.Pressure Sensor Method. The aim is to utilize a pressure sensor...
The method for determining the water vapor transmittance of plastic films and sheets.
---Determination of Water Vapor Transmission Rate of Plastic Films and Sheets, Part 7.Calcium Corrosion Method. The purpose is to determine the water vapor transmission rate of plastic films and sheets using the calcium corrosion method.
The water vapor transmittance of thin films and sheets.
This document describes the determination of water vapor transmission rate of plastic films and sheets, and composite plastic films and sheets using gas chromatography.
The test method for water vapor transmission rate of thin sheets has become more systematic and standardized.
Determination of water vapor transmission rate of plastic films and sheets
Part 4.Gas Chromatography
1 Scope
This document describes a method for determining the water vapor transmission rate of plastic films and sheets, and composite plastic films and sheets, using gas chromatography.
Note. This document provides a rapid method for determining water vapor transmission rate over a wide range.
2 Normative references
The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.
For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.
This document.
ISO 4593 Mechanical methods for determining the thickness of plastic films and sheets.
Note. GB/T 6672-2001 Mechanical measurement method for determination of thickness of plastic films and sheets (idt ISO 4593.1993)
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
Under specified test conditions, the mass of water vapor passing through a unit area of the sample per unit time.
Note. The unit is grams per square meter 24 hours [g/(m2·24h)].
4.Principles
When the sample is placed in the permeation chamber, it divides the chamber into a dry chamber and a wet chamber. The dry chamber is evacuated by a vacuum pump, while the wet chamber is filled with a relatively humid environment.
Water vapor is controlled at a specific level. Due to the humidity difference, water vapor permeates from the wet chamber through the sample into the dry chamber and during the sampling cycle, collecting a...
After a period of time, the absolute mass of the collected water vapor was measured using a gas chromatograph. The mass of the transmitted water vapor, the transmission time, and the transmission rate of the sample were then analyzed.
Calculate water vapor transmission rate based on area.
5 Samples
5.1 The samples should be representative, free of wrinkles, creases, and pinholes, and of uniform thickness. The area of each sample should be larger than the permeation chamber of the test unit.
The area should be sealed and installed.
5.2 Unless otherwise specified or agreed upon by the relevant parties, three samples shall be taken for testing in each group.
5.3 Unless otherwise specified, the thickness of each specimen shall be determined at three equally spaced points in accordance with ISO 4593.
...
