90.20 Standard under periodical review Jul 15, 2026
CEN
CEN/TC 139 Paints and varnishes
Technical Specification
87.040 Paints and varnishes
Published
This Technical Specification describes a test method to measure the ultraviolet (UV) and visible (VIS) spectral transmittance in the wavelength range from 280 nm to 700 nm of coatings for exterior wood. From the spectral transmittance the transmittance of UV, VIS and the UV plus VIS wavelength range can be calculated.
It is applicable to free coatings films or coatings applied on a UV-transparent substrate.
PUBLISHED
CEN/TS 927-12:2023
90.20
Standard under periodical review
Jul 15, 2026