Book Bits
Evaluating Filters
From the book "How to Select a Motor Oil and Filter for Your Car or Truck"
If you're going to pay a premium to get a high-performance filter, look carefully at the capture efficiency (particle size retention) of the filter. For instance, a filter that has a capture efficiency of 95 percent for particles larger than 10 microns will remove 95 percent of the particles larger than 10 microns on a single pass and 5 percent of the particles larger than 10 microns will pass through the filter. It is worth noting that this performance property is a particularly large component of the premium price you're paying for good filtration.
More information about the book "How to Select a Motor Oil and Filter for Your Car or Truck" at
http://www.noria.com/secure/product_detail.asp?catalogid=79
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Evaluating Filters
From the book "How to Select a Motor Oil and Filter for Your Car or Truck"
If you're going to pay a premium to get a high-performance filter, look carefully at the capture efficiency (particle size retention) of the filter. For instance, a filter that has a capture efficiency of 95 percent for particles larger than 10 microns will remove 95 percent of the particles larger than 10 microns on a single pass and 5 percent of the particles larger than 10 microns will pass through the filter. It is worth noting that this performance property is a particularly large component of the premium price you're paying for good filtration.
More information about the book "How to Select a Motor Oil and Filter for Your Car or Truck" at
http://www.noria.com/secure/product_detail.asp?catalogid=79
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