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API MPMS CH 22.6: Testing Protocols for Gas Chromatographs : Reaffirmed

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192

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API RP 1174: Onshore Hazardous Liquid Pipeline Emergency Preparedness and Response : Reaffirmed

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182

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API STD 624: Type Testing of Rising Stem Valves Equipped with Flexible Graphite Packing for Fugitive

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171

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API STD 20G: Welding Services for Equipment used in the Petroleum and Natural Gas Industry : Reaffirmed

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API STD 624: Errata 2

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API RP 1173: Pipeline Safety Management Systems

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ISO 787:1985

ISO 787:1985 General methods of test for pigments and extenders – Part 24: Determination of relative tinting strength of coloured pigments and relative scattering power of white pigments – Photometric methods

CDN $115.00

SKU: 85e9d2e9aa36 Category:

Description

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.

Edition

2

Published Date

1985-12-19

Status

PUBLISHED

Pages

11

Language Detail Icon

English

Format Secure Icon

Secure PDF

Abstract

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.

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