Unlike the pre-formed sachets, the automatic form and fill versions provide and opportunity for disinfecting the plastic film before milk is filled in. Batch pasteurised milk may also be filled in plastic or glass bottles or 3 - 5 litres plastic gallons and capped with aluminium foil, screw or cork cap. Bulk vending After batch pasteurisation and cooling milk may be sold in bulk via bulk vending machines. This system is reported to be successfully in use in India. It cuts down the high cost of single use packaging.
Pasteurised milk has to be kept cold throughout the marketing chain.
Hence provision for refrigerated storage is mandatory. Transportation and distribution has to be done in insulated vehicles to avoid excessive temperature increases. As described above low-pressure steam boilers or electric hot water generators may be used to provide process heat. Refrigeration Mechanical refrigeration appears to be the only option available. While its is possible to use batch retorts to produce sterilised milk in bottles.