LESS Slippery Toilet Bowl Coating Saves Water

Nov-18-19 The LESS slippery, self-cleaning coating for toilets bowls resists fouling to help save water.

The liquid-entrenched smooth surface (LESS) coating created by the team from Penn State University is applied to standard toilet bowls in two steps. The first is an application of a polymer that will dry into a forest of tiny hairs, followed by a second coating that adds a layer of lubrication around the base of the hairs. In lab tests of the coating, synthetic fecal matter slid smoothly from the surface, drastically reducing the amount of water needed to clean the inside of the bowl. The application process takes about five minutes, and the coating can withstand up to 500 flushes before needing to be re-applied.

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