빠른 지원
인증된 전문가에게 직접 연결
인증된 전문가에게 직접 연결
Loading: 1000g
Shipping Weight: 4 KGS
14 pencils (grade 6B to 6H) are used together.
The purpose of scratch hardness tests is to determine the resistance of coating materials or lacquers to scratch effects on the surface. This test is of particular value for furniture or vehicle lac- quers, but is also a useful aid in the development of synthetic resins or other film forming materials.
