Method to control quality of UV transparent substrate plates suitable for in vitro determination of UV protection

摘要

The present invention is directed to a method to control quality of UV transparent substrate plates, comprising the steps: a) providing UV transparent substrate plate; b) determining surface parameters for at least one roughened main surface of the UV transparent substrate plate, wherein the surface parameters determined comprise at least three surface parameters selected from Sv, Rv, St, Rt, Sdr, Rdr, Sdq, Rdq, Ssk, Rsk, SA1, A1, SA2, A2 and Vvv; c) use of determined values to generate one or more comparative values; d) determine compliance of one or more comparative values with a threshold value; and e) if a predetermined number of comparative values does not exceed a corresponding threshold value, the UV transparent substrate plate is designated as "pass".