RESITANCE TO STAINING - GB/T18103-2000 (6.3.7) and GB/T17657-1999 (4.37) (adapted)

1. TOOLS
1.1 Cover, about∮40 mm
1.2 Dripping-bottle, 30 or 60 ml
1.3 Absorbent cotton
1.4 Water or Solvent (alcohol, acetone)
1.5 Testing substance (nail polish, red ink, vinegar, lipstick, soy sauce, red wine, etc.)

2. SAMPLING
1*300xwidth mm

3. TESTING PROCEDURE
3.1 Clean the sample surface with absorbent cotton



3.2 Smear minimum 2 drops of testing substance total about 300 mm2



3.3 Cover the testing substance for 24 hours



3.4 Swab the surface with water or solvent and dry with absorbent cotton



3.5 Observe the surface from 40 mm away

4. ASSESSING TEST RESULTS
Passing requirement: no trace or contamination