BSIS0 22551:2020 BSI Standards Publication Licensedcopy:UniversityofLiverpoolLiverpool,UniversityofLiverpool,Versio Fineceramics(advancedceramics,advanced technical ceramics) Determination of bacterial reduction rate by semiconducting photocatalytic materials under indoor lighting environment Semi-dry method for estimating antibacterial activity on the actual environmental bacteria contamination surface bsi. BSISO22551:2020 BRITISH STANDARD Nationalforeword ThisBritishStandardistheUKimplementationofIS022551:2020. TheUKparticipation in its preparation was entrusted to Technical CommitteeRPI/13,Advancedtechnicalceramics. A listoforganizations representedonthiscommitteecan beobtained on requestto its secretary. Thispublication does notpurportto includeall thenecessaryprovisions ofacontract.Usersareresponsiblefor its correctapplication. TheBritishStandardsInstitution2020 PublishedbyBSIStandardsLimited2020 ISBN9780580515668 ICS81.060.30 Compliancewitha British Standardcannot conferimmunityfrom legal obligations. This British Standard waspublishedunder theauthorityof the StandardsPolicyandStrategyCommitteeon31January2020. Amendments/corrigendaissuedsincepublication Date Textaffected BSIS022551:2020 INTERNATIONAL ISO STANDARD 22551 First edition 2020-01 Fine ceramics (advanced ceramics, advancedtechnical ceramics) Determinationofbacterialreduction rate by semiconducting photocatalytic materials under indoor lighting environment - Semi-dry method for estimating antibacterial activity ontheactualenvironmentalbacteria contaminationsurface Referencenumber IS022551:2020(E) SO IS02020