Performing A Difference Measurement - wtw photolab S12 Operating Instructions Manual

7. Method Parameters

7.1.2 Performing a difference measurement

Difference measuring is possible for some methods
(e.g. Iron II/III, Ca-/Mg Hardness).
For more information on this, see part, "Analysis
specifications".
Example:
Determination of iron (II) and iron (III).
– Change to measuring by pressing
24
– Enter method 106
– Confirm with
– Call up the citation menu item.
The current setting: Fe
– Using
– Confirm with
– Citation form Fe II, Fe III
4
.
– Start the 1st measurement by inserting cell 1.
1
.
3
scroll to Fe II, Fe III
1
.
Δ
(S) is set.
Δ