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GB/T 3295-2025: Test method for specular gloss of ceramic ware
Status: Valid GB/T 3295: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 3295-2025 | English | 219 |
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Test method for specular gloss of ceramic ware
| Valid |
GB/T 3295-2025
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| GB/T 3295-1996 | English | 159 |
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Standard test method for 45-degreespecular gloss of ceramic ware
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GB/T 3295-1996
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| GB 3295-1982 | English | 199 |
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Standard test method for 45-deg gloss of domestic ceramic ware
| Obsolete |
GB 3295-1982
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Basic data | Standard ID | GB/T 3295-2025 (GB/T3295-2025) | | Description (Translated English) | Test method for specular gloss of ceramic ware | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Y24 | | Classification of International Standard | 81.060.20 | | Word Count Estimation | 10,153 | | Date of Issue | 2025-08-29 | | Date of Implementation | 2026-03-01 | | Older Standard (superseded by this standard) | GB/T 3295-1996 | | Issuing agency(ies) | State Administration for Market Regulation, National Standardization Administration | GB/T 3295-2025: Test method for specular gloss of ceramic ware---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/GBT3295-2025
ICS 81.060.20
CCSY24
National Standard of the People's Republic of China
Replaces GB/T 3295-1996
Test method for specular gloss of ceramic products
Released on August 29, 2025
Implementation on March 1, 2026
State Administration for Market Regulation
The National Standardization Administration issued
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 replaces GB/T 3295-1996 "Test method for 45° mirror gloss of ceramic products". Compared with GB/T 3295-1996,
In addition to structural adjustments and editorial changes, the main technical changes are as follows.
--- Changed terms and definitions (see Chapter 3, Chapter 2 of the.1996 edition);
--- Changed the instrument device and clarified the technical parameters of the gloss meter and the gloss plate (see Chapter 5,.1996 edition
Chapter 4);
--- Changed the sample requirements and deleted the sample quantity requirements (see Chapter 6, Chapter 5 of the.1996 edition);
--- Changed the test method description (see Chapter 7, Chapter 6 of the.1996 edition);
--- Changed the calculation and result presentation (see Chapter 8, Chapter 7 of the.1996 edition);
--- Changed the test report (see Chapter 9, Chapter 8 of the.1996 edition).
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 was proposed by the China Light Industry Federation.
This document is under the jurisdiction of the National Technical Committee for Standardization of Daily-Use Ceramics (SAC/TC405).
This document was drafted by. Lishui Quality Inspection and Testing Institute, Jiangxi Ceramic Testing Center, Nanping Product Quality Inspection Institute, Quanzhou
Keshijia Optoelectronic Instrument Co., Ltd., China Light Industry Ceramics Research Institute.
The main drafters of this document are. Zhang Weibo, Xu Dayu, Yang Weixi, Wang Difan, and Zou Wenjie.
The previous versions of this document and the documents it replaces are as follows.
---First issued in 1982 as GB 3295-1982, first revised in.1996 as GB/T 3295-1996;
---This is the second revision.
Test method for specular gloss of ceramic products
1 Scope
This document describes the test method for the specular gloss of ceramic products.
This document is applicable to the mirror gloss test of ceramic products, and is also suitable for evaluating the corrosion resistance, wear resistance, and other
The impact of external factors on the surface of the product.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
GB/T 5000 Terminology of daily-use ceramics
JJG696 Verification Procedure for Mirror Gloss Meters and Gloss Plates
3 Terms and Definitions
The terms and definitions defined in GB/T 5000 and JJG 696 and the following apply to this document.
3.1
Specular gloss
Glossiness
GS(θ)
A relative measure of specular gloss.
Note. The reference standard is black glass with a refractive index nD = 1.567.Assuming that its surface is ideally polished, the surface will reflect the natural light beam.
And define the specular glossiness value at this time as 100.0 gloss units.
3.2
Glossiness plate
Ceramic plate or polished black glass plate with smooth, uniform surface and good wear resistance.
Note. Used in conjunction with a gloss meter.
4 Principles
Under the specified incident angle and beam conditions, the reflected light intensity of the ceramic surface in the mirror direction is compared with the glossiness plate in the mirror direction.
The gloss value of the sample is measured by the intensity of reflected light in the direction.
5 Instruments and Equipment
5.1 Glossmeter
The incident angle is 45° or 60°. The metrological performance of the instrument shall not be lower than Level 2 in JJG696.The optical principle and metrological performance requirements of the instrument are shown in Appendix A.
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