Don't think the Calgon sold in UK (or any where else in Europe) is phosphate based. If it is anything like the USA versions powder is mostly washing soda and other alkaline substances. That sort of defeats the purpose of using a more gentle liquid laundry product free of harsh alkali.
Can one even purchase phosphates like STPP in UK/Europe. Lord knows with water often so hard you can chip teeth, something is needed unless going with mechanical water softener.
Can one even purchase phosphates like STPP in UK/Europe. Lord knows with water often so hard you can chip teeth, something is needed unless going with mechanical water softener.