Question: what are the chemical used in cleaning and sanitizing?
Answer: CHLORINE. Chlorine is the most common chemical sanitizing agent used in the milk industry. ... 
IODINE. Iodine sanitizers used in milk plants are usually in the form of iodophors. ... 
QUATERNARY AMMONIUM COMPOUNDS (Cationics) ... 
CHLORINE DIOXIDE. ... 
ACID SANITIZERS.