ISO 3262-1-2020 pdf free.Extenders—Specifications andmethods of test — Introduction and general test methods.
This document gives the definition for the term extender and specifies test methods that are requiredfor most of the subsequent parts of ISO 3262.
NOTE The subsequent parts of lS0 3262 specify requirements and the corresponding methods of test forextenders for use in paints, related coating materials and other applications.
The following documents are referred to in the text in such a way that some or all of their contentconstitutes requirements of this document. For dated references,only the edition cited applies. Forundated references, the latest edition of the referenced document (including any amendments) applies.ISO 385, Laboratory glassware — Burettes
ISO 648,Laboratory glassware — Single-volume pipettes
ISO787-2,General methods of test for pigments and extenders —Part 2: Determination of matter volatileat 105 ℃
ISO 1042,Laboratory glassware — One-mark volumetric flasks
ISO 3696, Water for analytical laboratory use —Specification and test methodsISO 3819,Laboratory glassware -Beakers
ISO 15528, Paints, varnishes and raw materials for paints and varnishes — Sampling
For the purposes of this document, the following terms and definitions apply.extender material in granular or powder form, practically insoluble to somewhat soluble in the applicationmedium and used to modify or influence certain physical properties.
NOTE There is no objection to the use of a particular instrumental method, agreed between the interestedparties, for comparison of colour.IS0 11664-4 defines procedures for calculating the respective coordinates inthe CIE 1976L*a*b* colour space.However, in view of differences between the results obtained with variousinstruments, the simple visual method is given as the referee method.A method for the assessment of hue ofnear-white specimens is described in ISO 18314-1.
Place approximately equal masses of the test sample and the agreed reference sample on to a groundglass plate placed on a piece of white paper.
Place a thin glass plate vertically between the two samples so as to form a partition.Push the samplestowards each other until they come into contact with the thin glass plate. Remove the glass plate andflatten the surface of the two heaps with another glass plate, removing the latter before viewing.
Examine the colour of the samples in diffuse daylight or, if good daylight is not available, make thecomparison in artificial daylight.
Carefully add a few drops of either white spirit or water (as agreed between the interested parties)in such a way that the two samples are just wetted without being disturbed, then repeat the colourcomparison by the same method as before.ISO 3262 pdf download.