Canning and Fish Packaging Technology

Unit 3 - Unit operations in canning

3.2.6.4.Quality of water in can cooling
Potable (drinking) quality water is used in can cooling i.e. the total plate count (TPC) should not be more than 100 cfu / (ml) g. Coli forms not more than 1 / g or ml and should be free of pathogens. Often cooling water is added with 4-8 ppm of free chlorine Higher Chlorine levels leads to outer can corrosion. If the can cooling water is recycled it has to cooled filtered and chlorinated.