ISO 10545-18:2022
Ceramic tiles — Part 18: Determination of light reflectance value (LRV)
The objective of this document is to define a test method to determine the light reflectance value (LRV) of ceramic tiles, including mosaic tiles.
It is applicable to solid-coloured, multicoloured and non-uniform shade tile surfaces including tile with flame effects, speckled or textured with different types of finishing.
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
5.1 Type of instrument
5.2 Instrument setup
5.3 Instrument calibration and standards
6 Preparation of test specimens
6.1 Solid coloured tiles
6.2 Multi-coloured, non-uniform shade, speckled or textured surface tile
7 Test
7.1 Measurement on solid coloured surfaces
7.2 Measurement on multi-coloured surfaces
7.3 Measurement on non-uniform shade, speckled or textured surface
8 Test report
Bibliography
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
5.1 Type of instrument
5.2 Instrument setup
5.3 Instrument calibration and standards
6 Preparation of test specimens
6.1 Solid coloured tiles
6.2 Multi-coloured, non-uniform shade, speckled or textured surface tile
7 Test
7.1 Measurement on solid coloured surfaces
7.2 Measurement on multi-coloured surfaces
7.3 Measurement on non-uniform shade, speckled or textured surface
8 Test report
Bibliography