ISO 10545-18-2022 PDF

Full title and description

ISO 10545-18:2022 — Ceramic tiles — Part 18: Determination of light reflectance value (LRV). This International Standard defines a laboratory test method for measuring the light reflectance value of ceramic tiles and mosaic tiles and is applicable to solid-coloured, multicoloured and non-uniform shade tile surfaces (including flame-effect, speckled or textured finishes).

Abstract

The document specifies a test procedure to determine the light reflectance value (LRV) of ceramic tiles. It covers measurement of LRV on a variety of tile surface types and finishes and provides requirements for sample preparation, measurement and reporting to ensure reproducible and comparable LRV values for product specification, quality control and compliance purposes.

General information

• Status: Published.
• Publication date: 22 March 2022 (ISO edition 1:2022).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 91.100.23 (Ceramic tiles).
• Edition / version: Edition 1 (2022).
• Number of pages: 6 (official ISO document length).

Scope

The standard’s objective is to establish a reproducible test method for determining the light reflectance value of ceramic tiles (including mosaic tiles). It is intended for use with solid-coloured, multicoloured and non-uniform shade tile surfaces, and includes guidance for textured, speckled or flame-effect finishes. The procedure is focused on producing comparable LRV results for specification, testing and reporting.

Key topics and requirements

• Definition and purpose of Light Reflectance Value (LRV) as a quantitative measure of visible-light reflectance for tile surfaces.
• Test method and measurement procedure to obtain LRV values on ceramic and mosaic tiles (sample preparation, measurement geometry and reporting requirements are specified in the text).
• Applicability to a range of surface finishes: solid, multicoloured, non-uniform shades, textured and flame-effect tiles.
• Requirements intended to ensure reproducibility for product specification, quality control and comparisons across suppliers.
• Reporting conventions so that LRV values can be used consistently in procurement, design and accessibility assessments.

Typical use and users

Primary users include tile manufacturers (for product specification and quality control), independent testing laboratories, product certifiers and conformity assessment bodies, architects and interior designers (for finish selection and specification), and accessibility consultants or building code authorities who use LRV data to assess visual contrast in buildings. The standard supports suppliers and specifiers who need reproducible LRV values for procurement and compliance.

Related standards

ISO 10545-18:2022 is one part of the multi-part ISO 10545 series on ceramic tiles (other parts cover sampling and acceptance, dimensional checks, water absorption, mechanical strength, abrasion, thermal properties, chemical resistance, colour differences, etc.). Related documents commonly referenced with ISO 10545 parts include ISO 13006 (ceramic tile definitions and classification) and national/adopted variants such as EN/ISO adoptions.

Keywords

ISO 10545-18, ceramic tiles, mosaic tiles, light reflectance value, LRV, test method, tile testing, surface finish, colour measurement, product specification.

FAQ

Q: What is this standard?

A: ISO 10545-18:2022 is an International Standard that specifies a laboratory test method to determine the light reflectance value (LRV) of ceramic and mosaic tiles for specification and testing purposes.

Q: What does it cover?

A: It covers the measurement procedure, specimen handling and reporting conventions needed to obtain reproducible LRV values for a wide range of tile surface types (solid, multicoloured, textured, speckled and flame-effect finishes).

Q: Who typically uses it?

A: Tile manufacturers, independent testing laboratories, certification bodies, architects and specifiers, and accessibility/wayfinding consultants use the standard to obtain and apply reliable LRV data in product specification, design and compliance work.

Q: Is it current or superseded?

A: ISO 10545-18:2022 is the current published edition (published 22 March 2022). Users should check national adoption or amendments for any later corrigenda or national implementations, but as of the ISO publication record this is edition 1:2022.

Q: Is it part of a series?

A: Yes — it is one part of the ISO 10545 multi-part series on ceramic tiles, which includes multiple parts addressing sampling, dimensional checks, water absorption, mechanical and surface properties, chemical resistance, colour differences and other test methods.

Q: What are the key keywords?

A: Light Reflectance Value (LRV), ceramic tiles, mosaic tiles, test method, surface finish, colour measurement, ISO 10545, tile testing, product specification.