GB/T 31402-2015 in English

《GB/T 31402-2015塑料 塑料表面抗菌性能试验方法》由TC15（全国塑料标准化技术委员会）归口，TC15SC5（全国塑料标准化技术委员会老化方法分会）执行，主管部门为中国石油和化学工业联合会。
本标准规定了经抗菌处理的塑料制品(包括半成品)的抗菌性能的评价方法。
注:本标准也适用于经抗菌处理的其他无孔材料的抗菌性能检测。
本方法不适用于未经抗菌处理塑料上细菌作用和繁殖的评价。ISO846描述了不同于本标准所覆盖方法的一些评价塑料上细菌作用及其繁殖的试验方法。感兴趣者可以参阅ISO846:1997方法 C。
本标准不涉及因抗菌处理而带来的次生效应,如预防塑料的生物腐蚀和异味,也不适用于评价塑料的生物降解性能。生物降解试验可参考ISO14851、ISO14852、ISO14855(见参考文献)及其他相关标准。
本标准并不涉及建筑用塑料,如 PVC或复合材料,除非将其以相同方式进行抗菌处理。
根据本标准所得到的任何结果均需参照本标准及其试验条件。利用本标准所得到的结果是在本标准的实验条件下得到的抗菌性能,而不代表在其他温度、湿度、菌种和营养等条件下的抗菌性能。利用本方法进行抗菌试验需要最低剂量的抗菌剂(化学品)溶入到接种菌液中。
建议试验人员查阅ISO7218进行微生物操作。

Plastics - Measurement of antibacterial activity on plastics surfaces


1 Scope

This standard specifies a method of evaluating the antibacterial activity of antibacterial-treated plastic products (including intermediate products).

Note: It may also be applicable to the antibacterial activity inspection of other antibacterial-treated non-porous materials.

It is not intended to be used to evaluate the effects and propagation of bacteria on plastics without antibacterial treatments. ISO 846 describes tests to evaluate the effects and propagation of bacteria on plastics, which are different from those covered by this standard. Those who are interested are referred to ISO 846: 1997, method C.

Secondary effects of antibacterial treatments, such as the prevention of biodeterioration and odour, are not covered by this standard, which is not intended to be used or referenced as a method to document or claim biodegradability of plastics. For biodegradation, refer to ISO 14851, ISO 14852 and ISO 14855 (see the Bibliography) and related standards.

This standard does not concern plastic building materials, such as PVC or composites, unless they act in the same way as treated articles.

Any results obtained with this standard should always refer to this standard and the conditions used. Results obtained with this standard indicate antibacterial activity under the specified experimental conditions used herein, and do not reflect activity under other circumstances where a variety of factors, such as temperature, humidity, different bacterial species, nutrient conditions, etc., have to be considered. A minimum diffusion of the antibacterial agents (chemicals) into the test inoculum is necessary with this method.

It is recommended that workers consult ISO 7218.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 7218 Microbiology of food and animal feeding stuffs - General requirements and guidance for microbiological examinations

3 Terms and definitions

For the purpose of this document, the following terms and definitions apply.

3.1
antibacterial
term describing a state where growth of bacteria on the surfaces of products is suppressed or describing the effect of an agent which suppresses the growth of bacteria on the surfaces of products

3.2
antibacterial agent
agent that inhibits the growth of bacteria on the surfaces of products by the use of an antibacterial surface treatment or a compounded agent

Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Materials
5 Apparatus
6 Sterilization of apparatus and storage of stock cultures
7 Procedure
8 Expression of results
9 Repeatability and reproducibility
10 Test report
Annex A (Normative) Quality of biological materials
Annex B (Informative) Repeatability and reproducibility
Bibliography