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ter wash Water wash: when about to finish conveying materials, the water wash starts. The purpose is to discharge remainders. when water flown from equipment bees clean, end this procedure. 3. CIP procedure Base wash: Making up 2%NaOH in the lye tank, then 2%NaOH heated to 80℃ by the plate heat exchanger (PHE) flows through the equipment about aim is to solute protein and milk fat. Water wash: after the lye is discharged, clean the equipment with water about 15min. Acid cleaning: Making up 2% HNO3 in the pickling tank, then 2% HNO3 heated to 80℃ by PHE circulates in equipment about 30min. Water wash: After the acid is discharged, clean the equipment with water about 15min. 4. Detergents The process of soil detachment is rather plex in nature, which means that there is no single chemical pound able to perform each step perfectly. In practice, a blend detergents will be used, made of the following ponents: 4. Detergents