The Kleen-Flo 2 gallon batch pasteurizer is the perfect fit for a small farm operation. Its stainless steel construction ensures a clean and safe finish product. Equipped with an adjustable thermostat! The pasteurization cycle compares to commercial pasteurizers that heat the milk, maintain a high temp of 156-159F, then cool for storage. It pasteurizing temperature of 156-159 F leaves the milk with a fresh flavor while eliminated harmful bacteria.