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Hydrogen Technologies Standards form the basic framework for market ramp-up
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Climate change Standards and specifications support climate targets
More information
Smart Farming Standards and specifications are drivers for the digitalization of agriculture
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Standards [CURRENT]

ABNT NBR ISO 4548-4
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)

Edition 2008-03-24

Original language Portuguese

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Hydrogen Technologies Standards form the basic framework for market ramp-up

Climate change Standards and specifications support climate targets

Smart Farming Standards and specifications are drivers for the digitalization of agriculture

ABNT NBR ISO 4548-4 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)

Want to learn more?

ABNT NBR ISO 4548-4
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)