Photometer Monitoring (Aqa1); Entering Photocheck Standards - wtw PhotoLab Spektral Operating Instructions Manual

9 Analytical Quality Assurance (AQA)
9.2

Photometer monitoring (AQA1)

9.2.1

Entering PhotoCheck standards

A Spectroquant
form the photometer monitoring. The theoretical
values (absorbances) of all 12 available stan-
dards are already stored in the photometer. If
these values differ from the theoretical values in
the lot certificate of the Spektroquant
Check, they have to be corrected in the photom-
eter.
Example: 445-1 nm, theoretical value (absorbance)
0.200, tolerance range ± 0.020 is to be changed to
theoretical value 0.120, tolerance range ± 0.012
52
®
PhotoCheck is required to per-
®
Photo-
→ In the setup menu, call up the meter setup sub-
menu
→ Call up the AQA configuration submenu
→ Input the password
→ Call up the AQA standards submenu and the fol-
lowing display appears:
→ Call up the PhotoCheck submenu.
Select between
input
If necessary, the values stored in the photometer
can be overwritten
output
Print/display theoretical values
→ Select using
or
→ Quit via the menu item, return
→ Confirm with
.