3M™ advanced technology has developed Lactic Acid Bacteria Count Petrifilm that no longer needs the conventional methods gas packs, chamber or CO2 incubators. The self contained anaerobic environment isenabled by oxygen-scavenging technology and oxygen-barrier films. Results in 48 hours of incubation. The proven reliability versus MRS and APT agar methods, but is an all-in-one method for differentiation of gas-producing colonies without Durham tubes or extra steps. It can be used to test a broad range of foods and environmental samples.