Miele PG 8504 Operating Instructions Manual page 83

Concentration The dispensing concentration for liquid process chemicals, e.g. in the
case of a change of process chemicals, can be adjusted for all pro-
grams at once.
The dispensing concentration must be set in accordance with the
manufacturer's instructions or with the required processing result.
The consumption of liquid agents is recorded in the log book (see
"Additional settings/Log book").
...
Dispensing system

 DOS_
Concentration

The dispensing concentration can be adjusted in increments of
0.01%. The possible range is shown in the bottom line of the display.
Set the concentration using the arrow buttons  (higher) and 

(lower).
Press OK to save the setting.

Additional settings
Concentration
0.30 %
(0.05 - 2.00 %)
83