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ISO/TS 19425:2015WithdrawnReciprocating internal combustion engines — Measurement method for air cleaners — Sound power level of combustion air inlet noise and insertion loss using sound pressureTechnical Specification · Published 9 Dec 2015 · ISO/TC 70ISO/TS 23556:2007WithdrawnPerformance test method for diesel engine soot-removal devices in lubricating oils — Initial filtration efficiencyTechnical Specification · Published 9 Mar 2007 · ISO/TC 70