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GB/T 10739-2023: Paper, board and pulps - Standard atmosphere for conditioning and testing
Status: Valid GB/T 10739: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 10739-2023 | English | 289 |
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Paper, board and pulps - Standard atmosphere for conditioning and testing
| Valid |
GB/T 10739-2023
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| GB/T 10739-2002 | English | 479 |
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3 days [Need to translate]
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Paper, board and pulps -- Standard atmosphere for conditioning and testing
| Obsolete |
GB/T 10739-2002
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| GB/T 10739-1989 | English | 199 |
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2 days [Need to translate]
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Paper, board and pulps--Conditioning of samples and testing atmospheres
| Obsolete |
GB/T 10739-1989
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PDF similar to GB/T 10739-2023
Standard similar to GB/T 10739-2023 GB/T 7979 GB/T 12914 GB/T 8942 GB/T 10741 Basic data | Standard ID | GB/T 10739-2023 (GB/T10739-2023) | | Description (Translated English) | Paper, board and pulps - Standard atmosphere for conditioning and testing | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Y30 | | Classification of International Standard | 85.060; 85.040 | | Word Count Estimation | 14,172 | | Date of Issue | 2023-12-28 | | Date of Implementation | 2024-07-01 | | Older Standard (superseded by this standard) | GB/T 10739-2002 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 10739-2023: Paper, board and pulps - Standard atmosphere for conditioning and testing---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 85:060;85:040
CCSY30
National Standards of People's Republic of China
Replace GB/T 10739-2002
Paper, cardboard and pulp
Standard atmospheric conditions for specimen handling and testing
samples, MOD)
Published on 2023-12-28
2024-07-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration Committee
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 replaces GB/T 10739-2002 "Standard Atmospheric Conditions for Handling and Testing of Paper, Board and Pulp Samples" and is consistent with
Compared with GB/T 10739-2002, in addition to structural adjustments and editorial changes, the main technical changes are as follows:
a) Added terms and definitions for calibration points and monitoring points (see 3:3, 3:4);
b) Added sample discard conditions (see 5:2);
c) Added “testing” requirements (see 6:3);
d) Added stipulations on the test date in the test report (see Chapter 7);
e) Changed the requirements for constant temperature and humidity laboratory test equipment, technical indicators and test methods (see Appendix B,:2002 version
Appendix A):
This document is modified to adopt ISO 187:2022 "Standard atmosphere and control procedures and tests for temperature and humidity treatment and testing of pulp, paper and paperboard"
Sample temperature and humidity treatment method:
Compared with ISO 187:2022, this document has many structural adjustments: See the comparison list of structure number changes between the two files:
Appendix A:
The technical differences between this document and ISO 187:2022 and their reasons are as follows:
a) Incorporate the content of Note 1 into the definition of temperature and humidity treatment to make the definition more complete (see 3:2);
b) Added terms and definitions of calibration points and monitoring points to enhance understanding of technical content (see 3:3, 3:4);
c) Delete the provisions that tropical countries can also use (27±1)℃ and relative humidity (65±2)% in standard atmospheric conditions to adapt to our country
Technical conditions (see 5:1 of ISO 187:2022);
d) Delete the processing requirements for laboratory paper sheets prepared according to ISO 5269-1 and ISO 5269-3, which are already relevant in GB/T 24324
Requirements (see Chapters 5 and 6 of ISO 187:2022);
e) The pretreatment requirements have been changed to adapt to my country’s technical conditions (see 6:1 of ISO 187:2022);
f) Appendix B has been changed, adding technical requirements for constant temperature and humidity laboratory test instruments, laboratory technical requirements, temperature, humidity, and wind conditions:
Test methods for speed, pressure difference, noise and other parameters to improve the operability of control, calibration and monitoring of constant temperature and humidity laboratories (see
Appendix B):
The following editorial changes have been made to this document:
a) The name of the standard is changed to "Standard Atmospheric Conditions for Handling and Testing of Paper, Paperboard and Pulp Samples";
b) Changed the description of the moisture content of the sample entering the equilibrium state (see Chapter 4, Chapter 4 of ISO 187:2022);
c) Changed the note of 6:2 (see 6:2, 6:2 of ISO 187:2022);
d) Deleted Appendix B (informative) relationship between temperature and relative humidity (see Appendix B of ISO 187:2022);
e) Added Appendix A (informative) for comparison between this document and ISO 187:2022 structure numbers (see Appendix C);
f) Added Appendix C (informative) laboratory structure and equipment reference requirements (see Appendix B):
Please note that some content in this document may be subject to patents: The publisher of this document assumes no responsibility for identifying patents:
This document is proposed by China Light Industry Federation:
This document is under the jurisdiction of the National Paper Industry Standardization Technical Committee (SAC/TC141):
This document was drafted by: Tianjin Boya Guangming Environmental Equipment Technology Development Co:, Ltd:, Zhejiang Kane New Materials Co:, Ltd:, China Pulp
Papermaking Research Institute Co:, Ltd:, Zhongqing (Jinjiang) Sanitary Products Research Co:, Ltd:, Zhongqing Paper Products Inspection and Certification Co:, Ltd:, Eddie Fubaix (Heavy Products)
Qing) Technology Co:, Ltd:, Shandong Bohui Paper Co:, Ltd:, Zhejiang Zhongxin Environmental Protection Technology Group Co:, Ltd:, Guangda Paper Products (Zhongshan)
Co:, Ltd:, Guoteng Colored Paper Products (Heshan) Co:, Ltd:
The main drafters of this document: Shen Zhenhuang, Fu Hongda, Li Xin, Liu Junjie, Wang Xinting, Wen Jianyu, Li Dafang, Tao Huixian, Mao Dongsheng,
Sun Jianjun, Teng Bubin, Huang Yaodong, Huang Yaoxing:
The previous versions of this document and the documents it replaces are as follows:
---First published as GB/T 10739-1989 in 1989, first revised in:2002;
---This is the second revision:
Paper, cardboard and pulp
Standard atmospheric conditions for specimen handling and testing
1 Scope
This document specifies the standard atmospheric conditions for temperature and humidity treatment and testing of paper, paperboard and pulp prior to testing:
This document applies to the handling and testing of paper, board and pulp specimens:
2 Normative reference documents
This document has no normative references:
3 Terms and definitions
The following terms and definitions apply to this document:
3:1
relativehumidityrelativehumidity
Under the same temperature and pressure conditions, the ratio of the actual water vapor content to the saturated water vapor content in the atmosphere:
Note: Expressed in percentage:
3:2
Temperature and humidity treatmentconditioning
The process of achieving moisture content equilibrium between the sample and the atmosphere at specified temperature and relative humidity (3:1):
Note: When the interval between the two previous weighings is more than 1 hour, and the difference in the weighed mass of the sample is not greater than 0:25% of the previous weighed mass of the sample, the sample is considered to be in contact with the atmosphere:
balance between conditions:
3:3
calibrationpoint calibrationpoint
The positions of temperature and humidity sensors required to be arranged in the constant temperature and humidity laboratory during the calibration process:
3:4
monitorpointmonitorpoint
The required position of temperature and humidity sensors during use of a constant temperature and humidity laboratory:
4 Principles
The sample is exposed to the specified atmospheric conditions of constant temperature and humidity, so that the adsorption and release of moisture by the sample reaches a relatively stable state: At this time, the sample
The specimen has reached equilibrium with this atmospheric condition:
5 Standard atmospheric conditions
5:1 The test standard atmospheric conditions used for paper, cardboard and pulp should be temperature (23:0±1:0)℃ and relative humidity (50:0±2:0)%:
5:2 Measure the atmospheric conditions of the laboratory according to Appendix B: If all test results are within the allowable limits, the atmosphere should be considered
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