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Significance and Use
In making pigmented products, the pigment is usually dispersed in a portion of the vehicle in some sort of mill. At this stage, it is necessary to be able to judge if the pigment agglomerates have been sufficiently broken up so as not to interfere with the smoothness of the finished coating film. This test method describes a way of making this judgment.
1.1 This test method covers measurement of the degree of dispersion (commonly referred to as “fineness of grind”) of the pigment in a pigment-vehicle system such as liquid coatings and their intermediates. It may also be used to assess the inclusion of particulates by a cleanliness (or texture) rating.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D1316 Test Method for Fineness of Grind of Printing Inks By the NPIRI Grindometer
ICS Number Code 87.060.10 (Pigments and extenders); 87.060.20 (Binders)
UNSPSC Code 31211604(Paint extenders)
ASTM D1210-05(2010), Standard Test Method for Fineness of Dispersion of Pigment-Vehicle Systems by Hegman-Type Gage, ASTM International, West Conshohocken, PA, 2010, www.astm.orgBack to Top