1 Scope
This International Standard specifies a destructive method for determination of the
dry film thickness, in which damage to the coat caused in a definite manner is evaluated
microscopically. The method is suitable for almost all coat-substrate combinations and also allows determination of the single film thicknesses of coating systems.
The method cannot be applied or can only be applied with restrictions in case of
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— too soft and/or elastic coatings (no recognizable scribe or drill hole can be observed),
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— hard (cannot be scribed/drilled) or too soft and/or elastic substrates,
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— too low visual contrast between the coating and substrate, and
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— film thicknesses that are larger than the depth of field of the measuring microscope.