NF T31-303*NF EN 12877-3:1999 Colouring materials in plastics - Determination of colour stability to heat during processing of colouring materials in plastics - Part 3 : determination by ovent test
1999NF T31-303*NF EN 12877-3:1999 Colouring materials in plastics - Determination of colour stability to heat during processing of colouring materials in plastics - Part 3 : determination by ovent test