Whirlpool WFW97HEXL1 Guide D'utilisation Et D'entretien page 16

ABOUT DETERGENT CONCENTRATION
Today's liquid HE detergents are concentrated. Most brands of
concentrated HE detergent will show the level of concentration
on the bottle. If so, simply set the concentration level in the
Precision Dispense menu to match the level shown on the bottle.
However, if the detergent bottle does not give the concentration,
it can be easily calculated. Just divide the package size in fluid
ounces by the number of loads. Then refer to the chart below to
find the concentration.
If you do not get your desired cleaning results, try using a lower
concentration number. If you have excess suds, try using a higher
concentration number.
Concentration Number of ounces + number of loads
1X >2.5
2X 1.5 - 2.49
3X 0.9 - 1.49
4X 0.7 - 0.89
5X 0.5 - 0.69
6X 0.3 - 0.49
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