Path: Home > GB/T > Page504 > GB/T 45127-2025 Home > Standard_List > GB/T > Page504 > GB/T 45127-2025
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 45127-2025 | English | 599 |
Add to Cart
|
5 days [Need to translate]
|
Plastics - Evaluation of the action of microorganisms
| Valid |
GB/T 45127-2025
|
PDF similar to GB/T 45127-2025
Basic data | Standard ID | GB/T 45127-2025 (GB/T45127-2025) | | Description (Translated English) | Plastics - Evaluation of the action of microorganisms | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G31 | | Classification of International Standard | 83.080.01 | | Word Count Estimation | 30,327 | | Date of Issue | 2025-01-24 | | Date of Implementation | 2025-08-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 45127-2025: Plastics - Evaluation of the action of microorganisms---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 83.080.01
CCSG31
National Standard of the People's Republic of China
Evaluation of the role of microorganisms in plastics
(ISO 846.2019,MOD)
Released on 2025-01-24
2025-08-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
Table of Contents
Preface III
Introduction IV
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Principle 2
4.1 General Principles 2
4.2 Antifungal Test 2
4.2.1 Method A. Fungal growth test 2
4.2.2 Method B. Antifungal Effect Test 2
4.3 Method C. Antibacterial Test 2
4.4 Method D. Antimicrobial Activity Soil Test (Soil Landfill Test) 2
4.5 Selection of biodegradation assessment performance 3
5 Instruments and Materials 3
5.1 Apparatus and materials applicable to all tests 3
5.2 Materials for fungal testing 3
5.2.1 Test fungi 3
5.2.2 Culture storage 4
5.2.3 Solutions and nutrient media 4
5.3 Materials for bacterial testing 5
5.3.1 Test bacteria 5
5.3.2 Nutrient media and solutions 5
5.4 Materials for soil landfill tests 5
6 Sample 6
6.1 Shape and size 6
6.2 Sample groups and number of samples in each group
6.2.1 Sample Group 6
6.2.2 Number of samples per group 6
7 Sample preparation 7
7.1 Cleaning 7
7.2 Labelling and storage 7
7.3 State adjustment and weighing 7
8 Test steps 7
8.1 Test temperature 7
8.2 Test methods 7
8.2.1 General requirements 7
8.2.2 Fungal growth test (method A) 8
8.2.3 Antifungal effect test (method B) 9
8.2.4 Antibacterial test (Method C) 10
8.2.5 Soil landfill test (method D) 11
9 Reviews 12
9.1 Visual Assessment of Fungal Growth on Specimens (Method A, Method B and Method D) 12
9.2 Evaluation of changes in sample mass and/or other physical properties 13
9.2.1 Cleaning 13
9.2.2 Quality changes 13
9.2.3 Changes in other physical properties 13
10 Results show 13
10.1 Overview 13
10.2 Visual assessment 13
10.3 Quality Changes 13
10.4 Changes in other physical properties 14
11 Accuracy14
12 Test Report14
Appendix A (Normative) Determination of water content and water holding capacity of soil 15
A.1 Overview 15
A.2 Determination of water content 15
A.3 Determination of water holding capacity 15
Appendix B (Normative) Negative Control Sample for Method A 17
Appendix C (normative) Grids for assessing fungal surface growth (Method A) 18
Appendix D (Informative) Test fungus information 20
Reference 22
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting.
This document is modified to adopt ISO 846.2019 “Evaluation of the microbiological effects of plastics”.
The technical differences between this document and ISO 846.2019 and their reasons are as follows.
--- Increase the range of standard temperature and relative humidity maintained by the constant temperature and humidity chamber (see 5.1.3) to improve operability;
--- Changed the requirements for stainless steel discs and their finishes (see 5.1.12) and stainless steel surfaces (see Appendix B) to adapt to my country
Technical conditions and improve operability;
--- Changed the provisions on the number of samples in group 0 and group S (see 6.2.1.1) to be consistent with the number of samples in each group in 6.2.2.
The following editorial changes were made to this document.
--- Deleted the normative reference document EN10088-1 (see Chapter 2, 5.1.12 and Appendix B of ISO 846.2019), added the national
The grade of the inner stainless steel (see 5.1.12, Appendix B);
--- Deleted the normative reference document EN13697.2015 and adopted the cleaning method in Appendix B (see Chapter 2,
6.2.2 and 7.1), added notes to indicate the relationship between Appendix B and EN13697.2015 (see Note 6.2.2);
--- Added notes to clarify the type of reagents used (see Note 5.1.11);
--- Added notes to supplement the applicable stainless steel sheet types (see Note 5.1.12);
--- Added the domestic strain number and related notes of the tested bacteria (see Table 1, Table 2, 5.3.1 and Table D.1);
--- Added the size and preparation method of the visual assessment specimen to be consistent with Appendix C (see 6.1);
--- Combined the contents of test report items f) and g) of ISO 846.2019 [see item f) in Chapter 12];
--- Added explanation of the evaluation sample grid and data on fungal growth examples (see Figures C.1 and C.2);
--- Replaced ISO 22196 with the informative reference GB/T 31402 (see 4.3).
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed by the China Petroleum and Chemical Industry Federation.
This document is under the jurisdiction of the National Plastics Standardization Technical Committee (SAC/TC15).
This document was drafted by. Institute of Microbiology, Guangdong Academy of Sciences (Guangdong Microbiological Analysis and Testing Center), Guangdong Dimei Biotechnology Co., Ltd.
Co., Ltd., Guangdong Jushi Chemical Co., Ltd., Guangzhou Synthetic Materials Research Institute Co., Ltd., Shenzhen Beice Testing Technology Co., Ltd.,
Shandong Dawn Polymer Materials Co., Ltd., Chengdu Tianyou Jingchuang Technology Co., Ltd., Shanghai Runhe Nanomaterials Technology Co., Ltd.,
Zhuhai Dingsheng Adhesive Plastic Environmental Protection Technology Co., Ltd., Zhejiang Jinhai Hi-Tech Co., Ltd., Dongguan Kadi Plastic Technology Co., Ltd.
company.
The main drafters of this document are. Xie Xiaobao, Tao Hongbing, Zhu Hongfang, Wang Haojiang, Zhou Yehua, Yuan Yingzi, Ma Mei, Li Sujuan, Tian Hongchi, He Xiuqiong,
Cui Lili, Zhang Sucheng, Ding Yike, Li Dingbiao, Wen Xia, Li Weiyi, He Zihao.
Introduction
Under certain climatic and environmental conditions, microorganisms can grow and reproduce on the surface of plastics or plastic products. Microorganisms and their metabolites
It can not only damage the plastic itself, but also affect the reliability of building materials and components containing plastic.
The test methods and conditions specified in this document are based on experiments and cover most potential applications.
For specific applications and long-term testing, agreement needs to be reached on a test procedure that reflects performance under real conditions.
The action of microorganisms on plastics is influenced by two processes.
a) Direct effect. Microorganisms use plastics as nutrients for growth, causing plastics to deteriorate;
b) Indirect effects. effects of microbial metabolites on plastics, such as discoloration or further deterioration.
This paper deals with both processes and their combined effects.
Evaluation of the role of microorganisms in plastics
WARNING - Handling and manipulation of potentially dangerous microorganisms requires high technical skills and should comply with current national laws and regulations.
Only personnel trained in microbiology techniques can conduct these tests and must strictly follow relevant disinfection, sterilization and personal hygiene procedures.
Standardized procedures. Experimenters should refer to IEC 60068-2-10 and ISO 7218 for operation.
1 Scope
This document describes methods for determining the degradation of plastics caused by the action of fungi, bacteria and soil microorganisms.
biodegradability of materials or degradation of natural fiber composites.
The type and extent of degradation can be determined by one or more of the following.
a) visual inspection;
b) changes in quality;
c) Changes in other physical properties.
This document applies to plastics with smooth, easily cleanable surfaces. Porous materials, such as plastic foams, are excluded.
This document uses the same test fungi as IEC 60068-2-10.The “assembled samples” in IEC 60068-2-10 require the use of spore suspensions.
The samples were inoculated and cultured with the suspension to evaluate the fungal growth and its structural damage to the samples.
The test strain used and the amount tested depend on the intended application of the plastic.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
Part 2-10.Tests-TestJandguidance.Mouldgrowth)
Note. GB/T 2423.16-2022 Environmental testing Part 2.Test method Test J and guidance. Mildew growth (IEC 60068-2-10.2018, IDT)
ISO 13934-1.2013 Textile fabrics-Tensile properties of fabrics-Part 1.Determination of maximum force and time at maximum force using the strip method
Note. GB/T 3923.1-2013 Textile fabrics tensile properties Part 1.Determination of breaking strength and elongation at break (strip method) (ISO 13934-
1.1999,MOD)
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Biodeterioration
Due to the action of microorganisms, the properties of the material (such as color, strength and quality) have undergone adverse changes.
3.2
Antifungal effect
In wet conditions, antimicrobial materials inhibit the overgrowth of fungi.
Price & DeliveryUS$599.00 · In stock
Delivery: <= 5 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 45127-2025: Plastics - Evaluation of the action of microorganisms
Status: Valid
Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 45127-2025_English be delivered?Answer: Upon your order, we will start to translate GB/T 45127-2025_English as soon as possible, and keep you informed of the progress. The lead time is typically 3 ~ 5 working days. The lengthier the document the longer the lead time. Question 2: Can I share the purchased PDF of GB/T 45127-2025_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 45127-2025_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. |