John L.
Yes I know that, and you know that; but Henkel/Dial makes no mention of water hardness when dosing Persil. Just "regular" or "large/heavily soiled" loads (about 75 ml).
In fact looking bottles of Tide and few other modern detergents in my collection none of them mention water hardness. Vintage products are another matter.
My point is the average consumer will go by what is on label, not necessarily factoring in water hardness.
Ironically my German Henkel Persil gel recommends 53ml for "soft" water and light soil, along with 73ml for hard water. Dosages go up from there based upon soil level (normal, heavy and extra heavy) and or soft water. Extra heavy soil in soft water suggested dose is a whopping 155ml, and 175ml for hard. My machines would choke to death on the froth.
Happily learned years ago to ignore dosage directions for European laundry detergents, especially from Germany. Most water on that side of pond even when "soft" is still harder that what I've got coming out of taps.
Yes I know that, and you know that; but Henkel/Dial makes no mention of water hardness when dosing Persil. Just "regular" or "large/heavily soiled" loads (about 75 ml).
In fact looking bottles of Tide and few other modern detergents in my collection none of them mention water hardness. Vintage products are another matter.
My point is the average consumer will go by what is on label, not necessarily factoring in water hardness.
Ironically my German Henkel Persil gel recommends 53ml for "soft" water and light soil, along with 73ml for hard water. Dosages go up from there based upon soil level (normal, heavy and extra heavy) and or soft water. Extra heavy soil in soft water suggested dose is a whopping 155ml, and 175ml for hard. My machines would choke to death on the froth.
Happily learned years ago to ignore dosage directions for European laundry detergents, especially from Germany. Most water on that side of pond even when "soft" is still harder that what I've got coming out of taps.