Siemens ADVIA 2400, Operator'S Manual, Page: 124 / 200

124 ADVIA 2400 Operator’s Guide
Measuring cuvette blanks
When performing weekly maintenance, be sure to perform the procedures in the
following sequence:
1. Weekly wash
2. Lamp energy check
Cuvette blank measurement (this procedure)
Materials required:
• No materials required
Time: 20 minutes
Analyzer mode: READY
BIOHAZARD
Wear personal protective equipment.
Use universal precautions.
Reaction cuvettes undergo changes in absorption with use. After the weekly wash,
perform the lamp energy check and the cuvette blank measurement to determine the
change. The cuvette blank is only run weekly, even if your lab runs the Weekly Wash as
a daily procedure.
1. At the Menu Panel, select
Maint.
, then select
User Maintenance
.
2. In the Cell blank meas.check area, select
Start CB
.
The measured cuvette blank values for all RRV cuvettes and a list of abnormal cells
are available in the real-time monitor in approximately 15 minutes.
3. Select
Yes
to save the data.
4. Evaluate the results:
•
17 cuvette cells are in each cuvette set. Replace cuvette sets when 4 or more cells
in a set are flagged abnormal.
NOTE:
An abnormal cuvette is defined as any cuvette with an H , L , or N flag.
•
If all the cells fail, replace the lamp .
5. If required, reprint the results.
6. Retain the statistical results and abnormal cell blank list printout with laboratory
records.
Cell blank measurement results
Printed data
The printed data is the OD (optical density) value X 1000. Each cell has two values and a
mean value.