SurePure, Inc., Canada, released a patented photopurification system designed to microbiologically purify potato rinse water. SurePure for potatoes

In order to thoroughly rinse potato products, large amounts of clean water have to be used and then dumped. This is both costly and environmentally unsound. Plus, rinse water can carry quite significant microbiological loads, where Salmonella, ecoli , soil and fertilizer residues can present.

The non-thermal SurePure system can also be used on its own to process milk, and when used in conjunction with pasteurization, is said to increase shelf life by at least 30%.