BSI PD CEN/TS 927-12:2023
$102.76
Paints and varnishes. Coating materials and coating systems for exterior wood – Ultraviolet and visible radiation transmittance
| Published By | Publication Date | Number of Pages |
| BSI | 2023 | 18 |
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.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 3 | 64_e_tp |
| 7 | 1 Scope 2 Normative references 3 Terms and definitions 4 Abbreviations |
| 8 | 5 Principle 6 Apparatus and materials 6.1 Film applicator for coating material 6.2 Substrate for free coating film preparation 6.2.1 Preparation of free film and test specimen 6.2.2 Coating application |
| 9 | 6.3 Film thickness measurement 6.4 UV/VIS spectrophotometer |
| 10 | 6.5 Long-pass filter specification for check 7 Test procedure 7.1 Test procedure with spectrophotometer |
| 11 | 7.2 Check of spectrophotometer with long-pass filter 7.3 Spectral transmittance of the specimen (film) |
| 12 | 7.4 Calculation of transmittance 8 Precision 9 Test report |
| 14 | Annex A (normative)Spectral transmittance of long-pass filter |
| 15 | Annex B (informative)Application and evaluation references B.1 Non-weathered samples B.2 Weathered samples B.3 Transmittance and film thickness B.4 Study on the total UV and VIS transmittance of a coating system |
