Short answer is yes it does, but phosphate has been banned in detergents in several states now, so many of the national brands have decided to reformulate nationwide
Modern phosphate free dishwasher detergent works well enough, but if you can find real TSP that is better. Watch out though, there is a product that is prominently labeled as TSP, but is actually a phosphate free alternative that is inferior to dishwasher detergent.
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