1. Measure the outside diameter of the cartridge (in inches, +/- 1/32").
2.Measure the cartridge length (in inches, +/- 1/16) including end
caps but excluding any handles or other extensions. Unicel recommends
measuring through the center (if possible) rather than along the outside
edge.
3.Identify the cartridge outside edge end cap configuration using the
photograph chart below. If the top and/or bottom is "open," measure the
inside diameter (in inches, +/- 1/32) of the top and/or bottom.
4. Record the OEM name and model of the filter the cartridge came out of
(if possible).
5. Count the number of pleats (+/- 2), and note whether there is a center
core or not.
The information gathered in 1-5 above can then be used to identify a
proper replacement. Unicel cartridges are grouped into series based on the
approximate outer diameter (O.D.) of the cartridge. For example, the 2000
Series is comprised of cartridges between 2 and 2.99 inches in outer
diameter; the 9000 Series is comprised of cartridges with an outer diameter
of 9 inches or greater. Note that if the cartridge length is either 4-15/16
or 6-15/16 it may be necessary to check the next larger series, the 5000
Series and 7000 Series, respectively. Within each series, cartridges are
listed sequentially by O.D. and cartridge length and identified according to
end cap i.d. and configuration, pleat count, media, and respective OEM.
Unicel cartridges listed between horizontal lines are interchangeable.
