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SCRATCH RESISTANCE PRIVATE STANDARD

1. TOOLS
1.1 BYK PB-8100 abrader
1.2 Steel wool #0, #2, #4

2. SAMPLING
100x400 mm sample

3. ENVIRONMENTAL CONDITIONS
Condition the sample on a flat surface for 24 hours at 23(+/-2)°C and 50(+/-5)% relative humidity

4. TESTING PROCEDURE
4.1 Clean the sample with absorbent cotton or soft cloth

4.2 Make sure the sample’s grain is parallel to the movement of steel wool

4.3 Place the sample on the tester

4.4 Attach the steel wool #0, #2 or #4 under a 1 kg weight

4.5 Abrade 50 cycles and clean the sample with the help of a soft brush



4.6 Examine the surface under sufficient D65 Average North Sky Daylight

5. ASSESSING TEST RESULTS
Acceptable (no scratches when tested with #0 steel wool)
High (no scratches when tested with #2 steel wool)
Excellent (no scratches when tested with #4 steel wool)



 
  
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