Oil Filter

What are the beta ratios?

Average beta rating based on ISO 4548-12 multi-pass test methods: B100 = 25 (at 25 or greater micron, media is 99% efficient.) B75 = 20 (at 20 or greater micron, media is 98.7% efficient. Also considered absolute rating.) B5 = 10 (at 10 micron or greater, media is 80% efficient.)

What function does the wire-backed media provide?

The wire backing is to support the filtration media. This further reduces the chance that the filter media could collapse. The use of stainless steel wire provides a strong, durable, AND low restriction way to provide the support.

What is the efficiency rating and at what micron size?

The efficiency of a filter is described in terms of a percentage of particles caught at a certain particle size(and larger). Using the ISO 4548-12 multi-pass filtration efficiency test, Royal Purple filters are: -99% at 25 micron and larger -98.7% at 20 micron and larger -80% at 10 micron and larger

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