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GB/T 45774.1-2025 English PDF

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US$244.00 · In stock
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GB/T 45774.1-2025: Quantitative determination of antibacterial activity of ceramic tile surfaces - Test methods - Part 1: Ceramic tile surfaces with incorporated antibacterial agents
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 45774.1-2025	244	Add to Cart	3 days	Quantitative determination of antibacterial activity of ceramic tile surfaces - Test methods - Part 1: Ceramic tile surfaces with incorporated antibacterial agents	Valid

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GB 34914 GB/T 38979 GB/T 38910 GB/T 45817 GB/T 45774.2 GB 25502

Basic data

Standard ID: GB/T 45774.1-2025 (GB/T45774.1-2025)
Description (Translated English): Quantitative determination of antibacterial activity of ceramic tile surfaces - Test methods - Part 1: Ceramic tile surfaces with incorporated antibacterial agents
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Q31
Classification of International Standard: 91.100.25
Word Count Estimation: 12,182
Date of Issue: 2025-06-30
Date of Implementation: 2026-01-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 45774.1-2025: Quantitative determination of antibacterial activity of ceramic tile surfaces - Test methods - Part 1: Ceramic tile surfaces with incorporated antibacterial agents

---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT45774.1-2025
ICS 91.100.25 CCSQ31 National Standard of the People's Republic of China Quantitative test for antibacterial activity on ceramic tile surfaces Method Part 1.Surface treatment of ceramic tiles containing antimicrobial agents Released on June 30, 2025 Implementation on January 1, 2026 State Administration for Market Regulation The National Standardization Administration issued

Preface III Introduction IV 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Ingredients 1 4.1 Strain 1 4.2 Culture media and reagents 2 4.2.1 Nonionic surfactants 2 4.2.2 Nutrient broth 2 4.2.3 1/500 Nutrient Broth 2 4.2.4 Nutrient agar medium 2 4.2.5 Soybean Casein Digest Broth with Lecithin and Polysorbate 80 (SCDLP) 2 4.2.6 Phosphate Buffered Saline (PBS) 3 5 Sample 3 5.1 Size 3 5.2 Control Sample 3 5.3 Preprocessing 3 5.4 Number of samples. 3 6 Step 3 6.1 Sample inoculation preparation 3 6.2 Covering film 4 6.3 Sample inoculation 4 6.4 Recovery of bacteria from the blank control sample at t = 0 h 4 6.5 Cultivation Period 5 6.6 Recovery of bacteria from samples after culture 5 6.7 Count of viable bacteria eluted from sample 5 7 Verification and Calculation 6 7.1 General requirements 6 7.2 Evaluation criteria for effective testing 6 7.3 Calculation of antimicrobial activity 6 8 Test Report 6 References 7 Preface 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 Part 1 of GB/T 45774 "Test method for quantitative determination of antimicrobial activity on ceramic tile surfaces". The following parts have been published. --- Part 1.Surfaces of ceramic tiles containing antimicrobial agents; --- Part 2.Surface of ceramic tiles containing photocatalytic antimicrobial agents. This document is equivalent to ISO 17721-1.2021 "Test method for quantitative determination of antimicrobial activity on ceramic tile surfaces - Part 1.Containing Antimicrobial Agents for Ceramic Tile Surfaces. 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 is proposed by China Building Materials Federation. This document is under the jurisdiction of the National Technical Committee for Standardization of Building and Sanitary Ceramics (SAC/TC249). This document was drafted by. Guangdong Dongpeng Holdings Co., Ltd., Fujian Jinjiang Haoshan Building Materials Co., Ltd., Guangdong Academy of Sciences Microbiology Institute of Biology (Guangdong Microbiological Analysis and Testing Center), Mona Lisa Group Co., Ltd., Xianyang Ceramics Research and Design Institute Co., Ltd., Foshan Oushennuo Ceramics Co., Ltd., Foshan Quality Metrology Supervision and Inspection Center, and Tangshan Customs Comprehensive Technical Service Center. The main drafters of this document are. Chen Shiqing, Wang Bo, Lu Hongkui, Zhang Yihan, Zhong Baomin, Xie Xintian, Xie Xiaobao, Liu Yijun, Xiao Libiao, Di Ping, Ke Shanjun, Ou Zhuokun, Wu Qingliang, and Li Wenjie.

introduction

The antibacterial activity of ceramic tiles is the number of viable cells found after inoculation and culture of bacteria in ceramic tiles with antibacterial properties and blank controls. The logarithmic difference of the difference is used to characterize the antibacterial performance of ceramic tile products. Antibacterial property has become one of the important indicators for evaluating the performance of ceramic tiles. The standardization work has attracted widespread attention at home and abroad. In this regard, the ISO 17721 series of standards developed by the International Organization for Standardization (ISO) is Method standards in the fields of manufacturing, consumer health and hygiene are divided into two categories. antibacterial ceramic tiles with antimicrobial agents and photocatalytic antibacterial ceramic tiles. China has already carried out domestic conversion work for this series of standards. GB/T 45774 "Test method for quantitative determination of antimicrobial activity on ceramic tile surfaces" is a method standard for the antimicrobial activity of ceramic tile surfaces. This standard aims to describe the test method for the antibacterial activity of antimicrobial ceramic tiles and photocatalytic antibacterial ceramic tiles, and is intended to consist of two parts. --- Part 1.Surface of ceramic tiles containing antimicrobial agents. The purpose is to describe the test method for the antimicrobial activity of antimicrobial ceramic tiles containing antimicrobial agents. Inspectors provide guidance. --- Part 2.Surface of ceramic tiles containing photocatalytic antibacterial agents. The purpose is to describe the antibacterial activity test of photocatalytic antibacterial ceramic tiles Provide guidance to testers. Quantitative test for the antibacterial activity of ceramic tile surfaces Method Part 1.Surface treatment of ceramic tiles containing antimicrobial agents 1 Scope This document describes a test method for evaluating the antimicrobial activity of antimicrobial agents applied to the surfaces of glazed and unglazed ceramic tiles. This document does not cover secondary effects on the tile surface due to the antimicrobial treatment, such as chemical resistance, stain resistance or small colour variations. For chemical resistance, see ISO 10545-13; for stain resistance, see ISO 10545-14; for small color differences, see ISO 10545-16. The test results obtained by this document are only applicable to this document and the test conditions specified in it. The antibacterial activity under different conditions cannot reflect the activity under various factors such as temperature, humidity, different bacterial species, and nutritional conditions. 2 Normative references This document has no normative references. 3 Terms and Definitions The following terms and definitions apply to this document. 3.1 antibacterial Inhibition of bacterial growth on the surface of a product or description of the effect of an agent that inhibits bacterial growth on the surface of a product. 3.2 antibacterial agent Drugs or compounds that can kill or inhibit the growth of bacteria on the surface of products through surface antimicrobial (3.1) treatment. 3.3 The logarithmic difference in viable cell counts found after inoculation and culture of bacteria between the antimicrobial-treated product and the untreated control. 4 Materials 4.1 Strains This test method uses the following strains. a) Escherichia coli; b) Staphylococcus aureus. The test method should be carried out using any of the above strains. The strains used in the test are shown in Table 1.Other strains can also be used with this test method. For tests, the test report should provide detailed information on the bacterial strains used, culture conditions and test procedures. The transfer and subculture of the strain should be carried out in a biosafety cabinet. Use a sterile inoculation loop to inoculate the strain into the nutrient agar medium. After incubation at (37±1)℃ for 18h~24h, store at 5℃~10℃. The culture temperature and time. ......

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Question 1: How long will the true-PDF of GB/T 45774.1-2025_English be delivered?

Answer: Upon your order, we will start to translate GB/T 45774.1-2025_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 45774.1-2025_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 45774.1-2025_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+ countries

Question 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 Sales@ChineseStandard.net. 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.