Fraunhofer Institute for Building Physics
Photo-catalytic efficacy of coatings against microorganisms
Building Chemistry, Building Biology, Hygiene
| Measurement | Testing of the photo-catalytic efficacy of a correspondingly equipped coating formulation |
| Standard | Own testing method, published |
| Measurement object | Special designed specimen (e.g., tiles, dimension from 5 × 5 cm2 to × 10 cm²) with coating (e.g., plaster, paint, varnish); non photo-catalytically equipped reference probe necessary |
Technical data
| Area of test specimen | 25 cm² or 100 cm² |
| Thickness of test specimen | Varies according to type of coating from 4 to approx. 20 mm |
| Processing | According to given requirements |
| Number of specimen | For each tested variant 15 specimen |
| Test duration | 2 to 6 weeks |
Special features
| Test strains | According to application “typical” test strains from own collection; for bacteria, fungi or algae in each case separate testing |
| Conditioning | On request also special conditioning possible: accelerated carbonation, watering, etc. |
More information
Further tests in context:
- testing on efficacy of biocidal equipped coatings against algae or fungi
- analysis of surface growth
- testing of biocidal activity on the surface
Legal notice
For licensing reasons, publishing or distributing the video material provided here – whether on TV, on video platforms or through reproduction on Blu-ray/DVD – is not permitted without Fraunhofer IBP’s prior agreement.
