Lamesõelsorter on osa primaarsest filtreerimisseadmestikust ja on tavaliselt esimene ehk esialgne filtreerimistase, mis paigaldatakse reoveepuhasti sissevoolule.
A bar screen is part of the primary filtration flow and typically is the first, or preliminary, level of filtration, being installed at the influent to a wastewater treatment plant.