BS 3900-D5-1997 Methods of Test for Paints Part D5:Measurement of Specular Gloss of Non-Metallic Paint Films at 20 Degrees,60 Degrees and 85 Degrees Renumbered as
BS EN ISO 2813:1997涂料的试验方法.涂料膜的光学试验.非金属涂料膜在20度、60度和85度镜面光泽的测定
样品要求：至少50×100mm, 3 pcs
周期：7~9工作日