PerkinElmer QuantaSmart 1694267, Reference Manual

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ADVANCED FEATURES
PerkinElmer Life and Analytical Sciences 143
To establish the optimal region settings for a nuclide using the Optimize Regions
feature, you will need to perform the following tasks:
1. Load the background vial in an odd numbered cassette position and the
sample vial in even numbered cassette positions.
Note: A background vial must be counted for each sample vial.
Attach the Priostat flag in the reset position to the cassette.
2. Select Optimize Regions from the Run Menu. The Sample Priostat window is
displayed.
3. Select Count from the Run menu. Counting will commence immediately after
the instrument identifies the Priostat flag.
4. Allow the samples to count long enough to reach statistical accuracy (2S%) of
2.00 (equivalent to 10,000 gross counts) before terminating the counting
procedure. The recommended minimum count time for a background sample is
ten minutes.
5. Stop the counting of a sample by selecting the Run-Stop menu item.
6. Select Next Sample from the Run menu, if you would like to count additional
samples.
7. Stop the Optimize Region counting procedure by selecting the Run-End Sample
Priostat menu item. An output window is displayed which provides you with the
optimal region settings for the sample nuclide.
8. Add this nuclide with the optimized region settings into the Sample Nuclide
Library for later use in various assays. Any quench standards sets defined for
use with this nuclide will automatically use the new region settings. No new
quench standards need to be counted as long as the nuclide is the same.
Notes: Enter values in the Region Fields to change the axes and
counting regions for Regions A, B and C. To restore the counting
region limits defined for the nuclide in the Nuclide Library, click the
Restore button. If no nuclide exists, or one is not available, the
region default setting for the Lower Level is 0.0 and the Upper
Level is 2000.0