Ideal for large quantities of potable water or treated wastewater that contains a low level of coliforms or E. coli. Up to 100 mL of water is filtered through a membrane filter and placed on a Coliscan-MF nutrient rich pad in a Petri dish. 10 tests. Refill package contains enough materials to do 10 tests (refill does not include membrane filtration apparatus).
Grades 7 and up