While trying to find out more about which dishwasher products are available with phosphates, I found this R-B site. You can go into each of their brands and look at the ingredient list for each of their products and product versions. It also has the ingredient listings for the US versions and Canadian versions of the same product. The number one ingredient in Glass Magic...STPP. Every other US detergent...phosphate free.
http://www.rbnainfo.com/productpro/ProductSearch.do
http://www.rbnainfo.com/productpro/ProductSearch.do