“Deliberately chose the detergent showing “ > 30% phosphates””
Detergents here, before the crackdown on phosphates used to be about 15% phosphates. Then that was cut in half. Laundry detergent has been w/o phosphates for some time now. Now dishwasher detergent.
We make our own soap...’Grandma’s lye soap’ and use it for bathing and laundry. Works great. We love it. Will not go back to store bought stuff. Too much suds for the dishwasher. Will buy a case of trisodium phosphate tomorrow to have it on hand for where we do need it...like in the dishwasher.
The phosphate chemical that used to be in detergent was STPP Not TSP.
See the following article:
http://pubs.acs.org/cen/coverstory/89/8904cover.html
-— Added to U.S. dishwasher detergents at up to 35% by weight, sodium tripolyphosphate (STPP), the main detergent phosphate, was something of a wonder ingredient, helping to maintain pH, remove food and grease, inhibit corrosion, and suspend insoluble dirt. For the consumer, its main visible benefit was to reduce spotting and filming by sequestering calcium and magnesium ions in the wash water. -—