wtw photolab S12 Operating Instructions Manual page 77

11. Zero adjustment
Only perform the zero adjustment against
distilled water in an optically perfect cell.
1
– Press
– In the setup menu, call up the meter setup submenu.
The following display appears:
After approx.
2 s:
– Call up the zero adjustment submenu with
28
.
– Insert a cell with distilled water.
The message, measuring..., appears on the display.
Successful zero adjustment for the 10 mm rectangular
cell.
The zero adjustment must be performed sepa-
rately for each cell type.
3
or
53