Preparation of steel substrates before application of paints and related products. Tests for the assessment of surface cleanliness - Field method for the refractometric determination of moisture Ingestion-build-107062 BS EN 4331 is part

BS EN 4331 is part of the series of EN metallic material standards for aerospace applications

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Preparation of steel substrates before application of paints and related products. Tests for the assessment of surface cleanliness - Field method for the refractometric determination of moisture Ingestion-build-107062 BS EN 4331 is part1 Scope This part of ISO 8502 describes a field method for the assessment of moisture, usually caused by condensation of water, on steel surfaces prior to application of paint. The method can be used on flat and slightly curved horizontal and vertical surfaces. The assessment should not be done on surfaces that are exposed to any falling water, e. g. rain, or condensation. The lowest surface moisture (water) level that can be detected by the method is