BS IS0 4548-12:2017 BSl Standards Publication Methods of test for full-flow lubricating oil filters for internal combustion engines Part 12: Filtration efficiency using particle counting and contaminant retention capacity bsi. BSISO4548-12:2017 BRITISH STANDARD National foreword ThisBritish Standard is theUK implementation of IS04548-12:2017 The UK participation in its preparation was entrustedto Technical CommitteeMCE/21/6,Filtersfor volatileliquid fuels and lubricatingoils. Alist of organizations represented on this committee canbe obtained on requestto its secretary. This publication does not purport to include all the necessary provisions ofa contract.Users areresponsiblefor its correct application. @TheBritishStandards Institution2017 Published byBSIStandards Limited2017 ISBN9780580889240 ICS 27.020 Compliancewith aBritish Standard cannot confer immunityfrom legal obligations. This British Standard was published under the authority of the StandardsPolicyandStrategyCommitteeon31July2017. Amendments/corrigenda issued since publication Date Textaffected BSIS04548-12:2017 INTERNATIONAL ISO STANDARD 4548-12 Second edition 2017-05 Methods of test for full-flow lubricating oil filters for internal combustion engines - Part 12: Filtration efficiency using particle counting and contaminant retention capacity Methodes d'essai des filtres a huile de lubrification a plein debit pour lesmoteursacombustioninterne- Partie12:Efficacite defiltration par comptagedesparticuleset capacite de retention des contaminants Reference number IS0 4548-12:2017(E) oS1 @IS02017