ISO 1524-2020 pdf free.Paints, varnishes and printing inks – Determination of fineness of grind.
This document specifies a method for determining the fineness of grind of paints, inks and related products by use of a suitable gauge, graduated in micrometres.
It is applicable to all types of liquid paints and related products, except products containing pigments in flake form (e.g. glass flakes, micaceous iron oxides, zinc flakes).
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 1513, Paints and varnishes — Examination and preparation of test samples
ISO 4618, Paints and varnishes — Terms and definitions
ISO 15528, Paints, varnishes and raw materials for paints and varnishes — Sampling
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 4618 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at http://www.electropcdia.org/
3.1
fineness of grind
reading obtained on a standard gauge under specified conditions of test, indicating the depth of the groove(s) of the gauge at which discrete solid particles in the product are readily discernible
4 Apparatus
4.1 Gauge, consisting of a block of a hardened steel or other suitable material, e.g. 175 mm long.
65 mm wide and 13 mm thick.
At least for use with water-dilutable paints, a block of stainless steel should be used.
The top surface of the block shall be both plane and ground smooth and shall contain one, two or three grooves approximately 140 mm long and 12.5 mm wide parallel to the longer sides of the block. The depth of each groove shall be uniformly tapered alonits length from a suitable depth (for example 25 um, 50 um or 100 um) at one end to zero at the other end and shall be graduated as specified in Table 1. A diagram showing two typical gauges is given in Figure 1.ISO 1524 pdf free download.
Tags: Paints, varnishes and printing inks
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