220 | Chapter 5: Qualification
Important Recommendations for All Liquid Tests
Test Solutions
l
Using pure deionized water in place of the test solutions is
not
recommended and will likely result in the failure to meet specifications.
l
Prepare the solutions the day before you plan to run the tests. This will
allow any foam caused by the agitation of solutions containing Tween
®
20 to
settle.
l
BioTek determined the pass/fail specifications for the instrument tests using
the recommended test solutions. You may use your own buffer solution
instead, but if any tests fail using your own buffer, retry the tests using the
recommended solutions.
Plate Reading
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If you are using one of BioTek’s keypad-based readers, such as the ELx800 or
ELx808, ensure that the reader is
not
running in
Rapid mode
. To check the
setting, select
UTIL
à
READ
and cycle through the options until
R EAD I N
R API D MODE?
appears. Set it to
NO
.
l
The absorbance of blue dye solutions should be measured at 630/450 (or
405) nm. The BioTek blue dye solution part number is
7773001
.
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The final absorbance for all dye solution concentrations should be in a range
between 0.700 and 1.600 OD.
Recording Test Results
l
Use the Liquid Test Worksheets at the end of this section for recording data
reduction results. If your tests are failing, this information will be useful for
BioTek TAC to help diagnose any problems.
MultiFlo™ FX Multi-Mode Dispenser