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Building Chemistry, Building Biology, Hygiene

Photo-catalytic efficacy of coatings against microorganisms

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

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