GB/T 5211.17-1988 "Comparison of white pigment contrast ratio (hiding power)"

This standard specifies a general test method for comparing the hiding power of white pigments, which is applicable to the comparative evaluation of similar white pigments. The standard requires the use of the same paint formulation and method, the preparation sample and the master standard, by measuring the reflectance on the black and white background, calculate the contrast ratio to evaluate the hiding power of pigments.

This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.