GB/T 18570.8-2005 Preparation of steel substrates before application of paints and related products.Tests for the assessment of surface cleanliness.Part 8:Field method for the refractometric determination of moisture (English Version)
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
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GB/T 18570.8-2005
Scope
This part of GB/T 18570 specifies the on-site evaluation method for the formation of moisture on the steel surface due to water condensation before coating. This method is suitable for flat or slightly curved horizontal and vertical surfaces, not for surfaces exposed to dripping water such as rain or condensation. The lowest surface moisture (water) density detectable by this method is 4g/m2. See Chapter 8 for accurate determination of densities significantly lower than this.
GB/T 18570.8-2005 Referenced Document
GB/T 18570.6-2005 Preparation of steel substrates before application of paints and related products.Tests for the assessment of surface cleanliness.Part 6:Extraction of soluble contaminants for analysis.The Bresle method
ISO 3696:1987 Water for analytical laboratory use; Specification and test methods
GB/T 18570.8-2005 history
2005GB/T 18570.8-2005 Preparation of steel substrates before application of paints and related products.Tests for the assessment of surface cleanliness.Part 8:Field method for the refractometric determination of moisture