The PIG test method is a destructive test to measure the thickness of a coating which is over certain coating/substrate combinations and to also measure individual layers of a multi-layer coating system.
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Take the coated product
- Using the marker, mark a line across the coating
- Using the PIG, make a cut at right angles to the marker line, all the way down to the substrate
- Using the microscope, measure the number of graticule divisions across a coating layer, using the sharp cut
5. Using the Scale factor (number of microns or mils per division), calculate the coating thickness |
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Elcometer Paint Inspection Gauge
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