BS 6431-13 1986 Edition, February 28, 1986
Ceramic floor and wall tiles - Part 13: Method for determination of scratch hardness of surface according to Mohs
Includes all amendments and changes through Reaffirmation Notice , March 15, 1996
Additional Comments: W/D NO S/S * INCLUDES AMENDMENT 1
Published By:British Standards Institution (BSI)
Applicable to all ceramic tiles.