Recommended for applications where system volume must be kept to a minimum.  Full use of the filter surface is maintained by a 5° entrance cone.  The 0.25” diameter replacement filter cartridges are available in 0.2 micron, 0.5 micron, 2 micron, 10 micron and 20 micron porosity, and have a 0.32 cm² active area.  Total internal volume is 11 µL for the 0.2 micron filter, 14 µL for the 0.5 micron filter, 18 µL for the 2 micron filter and 27 µL for the 20 micron filter.