BS EN ISO 11127-4. Preparation of steel substrates before application of paints and related products. Test methods for non-metallic blast-cleaning abrasives. Part 4. Assessment of hardness by a glass slide test
25.220.10 - Surface preparation
This is one of a number of parts of ISO 11127 dealing with the sampling and testing of non-metallic abrasives for blast-cleaning.
The types of non-metallic abrasive and requirements on each are contained in ISO 11126.
The ISO 11126 and ISO 11127 series have been drafted as a coherent set of International Standards on non-metallic blast-cleaning abrasives. Information on all parts of both series is given in Annex A.
This part of ISO 11127 specifies a method of assessing whether a non-metallic blast-cleaning abrasive has a minimum hardness of 6 on Mohs' scale.
The test described in this part of ISO 11127 is a pass/fail test and is not a method for the accurate determination of hardness.
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