Motorola LS6000B-U Guía de usuario Pagina 94

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LS 6000 Scintillation System User’s Manual
PN 247971-F
5-16
Data Calculation
Xtal SL DPM % of Reference
Single and Dual Label DPM % of Reference (if installed) is available when a liquid scintillator
is selected. Xtal SL DPM % of Reference (if installed) is available when Xtal is selected as the
scintillator. Refer to Section 5.8 for information on Xtal SL DPM % of Reference.
Setting Up DPM % of Reference
When editing a User Program, from the Data Calculation Menu (Figure 5.1), choose “SL
DPM %REF~’, or “DL DPM %REF”. The prompts displayed on the menu are the same as
described for the DPM program. Isotope Ratio is included for DL DPM % of Reference. Refer
to Setting Up DPM Section 5 for information on these prompts.
Loading Samples for DPM % of Reference
The same loading sequence used for SL CPM % of Reference is used for DPM % of Reference.
Refer to Loading Samples for DPM % of Reference Section 5.
Results for DPM % of Reference
To count the samples, refer to Section 3.2. A typical printout for Single Label DPM % of
Reference in Standard Format is shown in Figure 5.14. A typical printout for Dual Label % of
Reference in Standard Format is shown in Figure 5.15. The calculated result is shown under
the % Ref column heading.
5.8 Xtal SL DPM % of Reference
The Xtal SL DPM % of Reference program is used for any type of experiment that requires
dividing each of the unknowns by a reference, yielding a percent value. The data is first
corrected to dpm using a standard counted at the beginning of the sample set. This standard
with a known dpm prepared in the same manner as the samples, is used to determine the
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