NF T51-065-1*NF EN ISO 13468-1:2019 Plastics - Determination of the total luminous transmittance of transparent materials - Part 1 : single-beam instrument
2019NF T51-065-1*NF EN ISO 13468-1:2019 Plastics - Determination of the total luminous transmittance of transparent materials - Part 1 : single-beam instrument