Performing A Difference Measurement - wtw PhotoLab Spektral Operating Instructions Manual

8.1.2

Performing a difference measurement

For some methods, it is possible to perform a differ-
ence measurement (e. g. iron II/III, Ca/Mg hardness).
Further information on this is given in the
third part, Analytical procedures of this
operating manual.
Example: Determination of iron (II) and iron (III).
8 Method parameters
→ Enter method 106
→ Confirm with
.
→ Call up the menu item, citation
→ Using
or
→ Confirm with
.
The citation form is set to Fe II, Fe III
→ Switch to the concentration measuring mode:
Press .
→ Start the 1st measurement by inserting cell 1.
∆
scroll to Fe II, Fe III
∆
( ).
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