SSH EN ISO 787-24:1995

Metodat e përgjithshme të provës për Pigmente dhe shtesa - Pjesa 24: Përcaktimi i forcës së nuancës relative të pigmenteve ngjyrues dhe fuqia e shpërndarjes relative të pigmenteve të bardha - Metodat fotometrike (ISO 787-24:1985)

General method of tests for pigments and extenders - Part 24: Determination of relative tinting strength of coloured pigments and relative scattering power of white pigments - Photometric methods (ISO 787-24:1985)

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.