I have very hard water and whirlpool says to use a dishwashing soap with a phosphorous content of 8.7%. Can you tell me which brand of dishwashing soap has this phosphorous content? Thank you.
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Perhaps to be safe, warranty and otherwise, you should contact Whirlpool ... This link has a 'search' tool and a contact link:
We have hard water as well and the ONLY dishwasher detergent that was high enough was cascade, no store brand came close, we checked.
Off hand I don't know, but I do know they list the phospherous content on the boxes and bottles of automatic dishwasher detergent. Just take a look at them next time you are shopping.
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