2005KS M ISO 6441:2005 Paints and varnishes-Indentation test(spherical or pyramidal)
2003KS M ISO 6441:2003 Paints and varnishes-Indentation test(spherical or pyramidal)
2002KS M ISO 6441-2:2002 Paints and varnishes-Determination of micro-indentation hardness-Part 2:Knoop hardness by measurement of indentation depth under load