GB/T 21353-2008 in English

《GB/T 21353-2008漆膜抗藻性测定法》由TC5（全国涂料和颜料标准化技术委员会）归口，主管部门为中国石油和化学工业联合会。
本标准规定了建筑涂料中的室外漆膜抗藻性能测试方法及结果评定，适用于室外建筑涂料漆膜抗藻性能测试，其他涂料漆膜抗藻性能测试可参考本标准。

1 Scope

This standard specifies the test method and result assessment for determining the resistance of the outdoor paint film among the building coatings to alga.
This standard is applicable to the performance test for determining the resistance of the outdoor paint film to alga and the performance test for determining the resistance of other paint film to alga may be carried out by reference to this standard.

2 Normative References

The following documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, the parties coming to an agreement according to this standard are encouraged to research whether the latest editions of these labels are applied or not. For undated references, the latest edition of the normative document is applicable to these specifications.
GB/T 1727-1992 Methods of Producing Films of Paints, Varnishes, Lacquers and Related Products on Test Panels
GB/T 3186 Paints Varnishes and Raw Materials for Paints and Varnishes – Sampling (GB/T 3186-2006, ISO 15528: 2000, IDT)

3 Terms and Definition

Contents
1 Scope
2 Normative References
3 Terms and Definition
3.1 Alga
3.2 Antialgae
4 Test Principles
5 Test Conditions
5.1 Equipments and Materials
5.2 Culture Medium and Reagent
5.3 Preparation of Test Samples
5.4 Preparation of Algae Culture Solution
6 Inspection Procedure
6.1 Preparation of Panel Culture Medium
6.2 Spraying Inoculation
6.3 Cultivation
7 Result Assessment
8 Judgment of Test Validity
Appendix A (Normative) Flow Diagram