DETERMINATION OF THE EFFICIENCY OF A FILTER

摘要

The invention relates to a method for determining the effectiveness of at least one filter (7) for filtration of solids from a flow of liquid (4), substantially comprising of: determining the quantity of solids in the flow (9) behind the filter and, at least immediately prior to determining the quantity, adding to the flow (4) a quantity (5) of at least one known solid, characterized by adding a much greater number of particles of the known substance than the solids present in the liquid in the flow (4) in front of the filter, wherein the quantity to be added (5) is known precisely, such that total numbers of particles prior to filtration can be at least approximately equated to the number of added particles.