Blank Value - wtw PhotoLab Spektral Operating Instructions Manual

11 Correction functions
11.1

Blank value

The blank value (= reagent blank value) for each
method is stored in the photometer.
When the blank value function is active, the stored val-
ue is ignored and the measured value of a self-pre-
pared reagent blank solution is used instead. This
procedure increases the measuring accuracy for
some tests (for more information, see part 3 Analyti-
cal procedures of this operating manual).
The blank value only applies to the method just called
up.
The blank value function is not active when delivered.
The following display appears:
The blank value function is active and appears in the
setup menu:
80
The measured blank value is stored until
the photometer is switched off
the method is changed
it is manually erased using the erase blank value
function.
→ Call up the blank value submenu in the correction
functions menu.
The blank value meas. function appears:
→ Select the menu item, on
→ Confirm with
.
→ To measure the blank value, call up the blank
value submenu in the setup menu.
→ Call up the meas. blank value menu item.
The erase blank value menu item first ap-
pears after a blank value has been mea-
sured.