Recommended for determining efficiency of sanitization of containers, equipments, surfaces, water miscible cosmetics etc. Contains 1% lecithin and 4% Polysorbate 80. Lecithin neutralizes quaternary ammonium compounds and polysorbate 80 neutralizes phenolic disinfectants, hexachlorophene, formalin and with lecithin ethanol. The plates are gamma irradiated . Available in scored plate, gamma irradiated and triple packed for environmental monitoring, sterility checks by touch or contact method. Grids for easy counting.