Measuring cell blanks

Reaction cuvettes undergo changes in absorption with use. After the weekly wash, perform the cell blank measurement to determine the change.

To measure cell blanks

1. At the Menu Panel, select  Maint, then select User Maint.

Help with the User Maintenance window

2. In the Cell blank meas.check area, select Start CB.

·   The measured cell blank values for 221 cuvettes and a list of abnormal cells are printed in approximately 15 minutes.

3. Select Yes in the subsequent dialog box to record the data.

4. Next, evaluate the results.

·    There are 17 cuvette cells in each cuvette set. Replace cuvette sets when four (4) or more cells in a set are 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 in your records.