Glass Corrosion in ADD Patented by Reckitt
US Patent No. 8,216,990 B2; Reckitt Benckiser has patented a method of protecting glassware from corrosion in an automatic dishwashing process. It entails placing a composition comprising zinc and bismuth into a dishwasher and washing the glassware in the presence of that composition. The mass ratio of zinc to bismuth is 1:100 to 100:1.
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