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The quantity of detergent used depends on the size of the
wash, the hardness of the water and the degree of soiling.
Follow the instructions on the detergent packet.
Your local water supply company can supply information
concerning the hardness of the water.
Water hardness
Degree dH mmol/L
I - soft below 8 below 1,4
II - medium hard 8 - 14 1,4 - 2,5
III - hard 15 - 21 2,6 - 3,7
IV - very hard over 21 over 3,7
If the detergent manufacturer gives no quantity indications
for reduced loads, use half less for a half load, and for
small loads one third of the quantity for a full load.
Detergent
Quantities