KS R ISO 4548-4-2007(2022) Methods of test for full-flow lubricating oil filters for internal combustion engines-Part 4:Initial particle retention efficiency, life and cumulative efficiency(gravimetric method)
2007KS R ISO 4548-4:2007 Methods of test for full-flow lubricating oil filters for internal combustion engines-Part 4:Initial particle retention efficiency, life and cumulative efficiency(gravimetric method)