All I know is my math teacher would have had a fit if I wrote 2/20=6/20. Can anyone help decipher WIX's information of these 2 filters.
WIX uses their own non-industry beta ratio nomenclature. That's what screws up trying to understand WIX beta ratio numbers, because it doesn't follow what you're gonna find searching the internet.
The two numbers on the left of the equals sign are the Beta Ratios:
Beta 2 = 50% efficient
Beta 20 = 95% efficient
The two numbers on right of the equals sign are the corresponding particle sizes.
The 2 in "2/20" goes with the 6 in "6/20", so it means 50% efficient at 6 microns.
The 20 in "2/20" goes with the 20 in "6/20", so it means 95% efficient at 20 microns.
Think of it as:
Beta 2/Beta 20 = 6 microns/20 microns
50% at/95% at = 6 microns/20 microns