T/SICCA 003-2018 Indoor air purification photocatalyst

Scope

Scope: This standard specifies the technical requirements, test methods, inspection rules, marking, labeling, and accompanying documents, as well as packaging, transportation, and storage requirements for photocatalysts used in indoor air purification. This standard applies to aqueous suspensions prepared by certain dispersion processes or directly synthesized in situ, with visible light-responsive photocatalysts as the main raw materials. Main technical content: 1. Standard structure: The standard is divided into eight chapters: "Scope", "Normative references", "Terms and definitions", "Technical requirements", "Test methods", "Inspection rules", "Marking, labeling, and accompanying documents", and "Packaging, transportation, and storage". 2. Key chapters: Technical requirements. Table 2 lists three brands of photocatalytic activity and performance indicators, namely GCH-1, GCH-2, and GCH-3. Here, "GCH" stands for the first letters of the three Chinese characters for "photocatalysis". The division into three brands is intended to promote further research and provide market options. The first brand is relatively mature and has been used for many years, providing technical support for safety risk detection and ensuring current work proceeds normally. The second and third brands represent technological advancements aimed at addressing current issues. These require further validation through time and methods, and their inclusion is intended to establish a guiding role. Brand 2 has been used internally by users for many years and tested in the company's laboratory. Brand 3's revised version has gained consensus in the industry and addresses existing problems, making it necessary to reflect these in the standard. 3. "Marking, labeling, and accompanying documents" are listed as a separate normative element in GB 1.1. Given the numerous industry issues requiring standardization, they are included as Chapter 7. 4. The conventional structure includes the first three chapte

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