SaniTEE effluent filters from Bio-Microbics provide consistent retention of wastewater solids whether as a stand-alone filter in the tank or prescreening for a complete wastewater treatment system, according to the maker. Available in 4-, 8- and 16-inch sizes to screen flows from 500 to more than 20,000 gpd, the screening devices are designed to reduce suspended solids discharged in the septic tank by promoting natural sedimentation and prevent gas-lifted particles from entering the outlet pipe. The keyhole weirs provide consistent flow, and the angled slots resist blinding to extend the life of the system, reduce clogging material and improve flow conditions. They incorporate a slip-in installation design and swabbing feature for easy clean-in-place maintenance. 800/753-3278; www.biomicrobics.com.