wtw MultiLab P5 Operation Manual page 47

Photometry - Additional functions
Clock is working even
without inserted
vial/cuvette.
or
Wait for time After reaction time (signal
or measure sound!) measurement is
with performed.
Test value is displayed.
If vial/cuvette is not inserted the following is displayed:
Indication of test value.
47
BA61101/08.00/Pla/MLP5-E2