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ISO/FDIS 787-24

General methods of test for pigments and extenders — Part 24: Photometric methods for determining the relative tinting strength of coloured pigments and the relative scattering power of white pigments

General information

50.20     Jun 25, 2026

ISO

ISO/TC 256

International Standard

87.060.10  

Scope

The method specified provide an instrumental alternative to those described in ISO 787/16 and ISO 787/17. Equal masses of a coloured material are separately dispersed in the same mass of the same white pigment paste. The reflectivity of each dispersion is measured photometrically. From the corresponding values of K/S the relative tinting strength is given. For measurement of the relative scattering power equal masses of a white test material and an agreed reference pigment are separately dispersed in the same mass of the same black pigment paste. The reflectivity of each dispersion is measured photometrically at 550 nm. From the corresponding values of K/S the relative scattering power is given.

Life cycle

PREVIOUSLY

PUBLISHED
ISO 787-24:1985

NOW

PROJECT
ISO/FDIS 787-24
50.20 Proof sent to secretariat or FDIS ballot initiated: 8 weeks
Jun 25, 2026

National adoptions

dnaSRPS EN ISO 787-24:2023  
ISS

General methods of test for pigments and extenders - Part 24: Photometric methods for determining the relative tinting strength of coloured pigments and the relative scattering power of white pigments (ISO/FDIS 787-24:2026)

50.20   Proof sent to secretariat or FDIS ballot initiated: 8 weeks

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