GB/T 38910-2020Sanitary wares—Test method of the marking (English PDF)
卫生陶瓷 标志试验方法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
June 2, 2020
Implementation date
May 1, 2021
Scope
GB/T 38910-2020 is the English-translated version of 卫生陶瓷 标志试验方法.
GB/T 38910-2020 is the Chinese standard "Sanitary wares--Test method of the marking". Its scope clause reads: This Standard specifies marking requirements, equipment and materials, durability marking test method, non-durability marking test method, test result and test report of test method of the marking of sanitary wares.
This Standard is applicable to the test of the marking of sanitary wares. Its clauses include terms and definitions; requirements; equipment and materials; test methods of durability marking; test method of non-durability marking; test results; test report.
It was issued by the State Administration for Market Regulation on JUNE 02, 2020 and took effect on APRIL 01, 2021.
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Document preview — GB/T 38910-2020
National Standard of the People's Republic of China
- ICS
- 91.140.70
- Classification
- Q 31
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword3
- 1 Scope4
- 2 Normative references4
- 3 Terms and definitions4
- 4 Requirements4
- 5 Equipment and materials5
- 6 Test methods of durability marking5
- 7 Test method of non-durability marking6
- 8 Test results6
- 9 Test report7
1 Scope
This Standard specifies marking requirements, equipment and materials, durability marking test method, non-durability marking test method, test result and test report of test method of the marking of sanitary wares.
This Standard is applicable to the test of the marking of sanitary wares.
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.
GB/T 6952, Sanitary wares
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1 Durability marking
Durability marks on sanitary ceramic products, such as trademark marks.
3.2 Non-durability marking
Non-durable marks on sanitary ceramic products, such as water level lines, water efficiency labels and so on.
4 Requirements
4.1 Marking
It shall meet the requirements of GB/T 6952.
4.2 Durability marking
4.2.1 The trademark shall be printed in a visible position after the product is installed.
NOTE: Smart toilet logo can be printed on the lid.
4.2.2 Durability marking shall have performances of moisture and heat resistance, hot water resistance, scrub resistance, abrasion resistance, corrosion resistance and so on.
5 Equipment and materials
5.1 Steel ruler: division value is1mm, range is 1000mm.
5.2 Humidity chamber: temperature range is 20°C~100°C, humidity range is 20%~98%RH.
5.3 Water heater: it is advisable to heat the water to 60°C with a water outlet.
5.5 Strong cleaning agent: commercial cleaner with pH of 9~10
5.4 Weak cleaning agent: commercial cleaner with pH of 6.5~7.5
5.8 Acetone: concentration is 99%
5.6 Concentrated hydrochloric acid: density is 1.19g/mL
5.7 Potassium hydroxide solution: 200g/L
6 Test methods of durability marking
6.1 Humidity and heat resistance test (Procedure A)
Place the sample in an environment with temperature of (40±2)°C and relative humidity of (98±2)% for 48h. At a distance of about 300mm from the sample, dry with air whose pressure does not exceed 200kPa. Visually observe the changes in the marking.
6.2 Hot water resistance test (Procedure B)
Use flowing water at (55±5)°C for 5min. Use a wet cloth to wipe clean. At a distance of about 300mm from the sample, dry with air whose pressure does not exceed 200kPa. Visually observe the changes in the marking.
6.3 Scrub resistance test (Procedure C)
Use a normal non-abrasive sponge or cloth to scrub the marking in a weak cleaning agent for 15s. Scrub 1 time per second. Use running water to rinse […]
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
Normative references
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