Originally Posted By: ARCOgraphite
Originally Posted By: sayjac
Quote:
I recall a wix for the Honda appp has a B 2/20=6/20 a B2=6 seems pretty good for a full flow traditional element. IIRC that calcs to a 83% at 2 micons.... Comments?
No idea if that is the Wix beta or not, but the beta you referenced (red) is 50%@6um and 95%@20um. I see no 2um level in that beta.
My understanding of Beta under ISO4572 is: BetaX=y where X=particle size in micron and y = beta ratio for that particle size. Could someone show me otherwise? I could be incorrect as 83% at 2 microns seems too fine a seive for a full flow filter with paper composite resin media.
Referenced beta shown 2/20=6/20 means 2/20=6/20 which mean 2 equals 50% (1/2)@ corresponding 6um. The other 20 (1/20) is 5%, meaning the filter is 95% efficient @ 20um.
Or, courtesy of ZeeO6 is the beta chart
Beta Ratio -- % Efficient
2 -- 50.00
5 -- 80.00
10 -- 90.00
15 -- 93.33
20 -- 95.00
25 -- 96.00
30 -- 96.67
40 -- 97.50
50 -- 98.00
75 -- 98.67
100 -- 99.00
125 -- 99.20
250 -- 99.60
500 -- 99.80
750 -- 99.87
1000 -- 99.90
2000 -- 99.95
5000 -- 99.98
10000 -- 99.99
That's otherwise.