CHAPTER 1
2 PerkinElmer Life and Analytical Sciences
Efficiency
For Tritium in the range 0-18.6 keV, the minimum acceptable efficiency is 60%
(58% for 3170TR/SL). For Carbon-14 in the range 0-156keV, the minimum
acceptable efficiency is 95% (94% for 3170TR/SL). These values were generated
by PerkinElmer Life and Analytical Sciences at our Downers Grove, Illinois facility.
The exact values obtained at other instrument locations may vary. Counting
Efficiency is a parameter measured as part of Instrument Performance
Assessment (IPA). IPA is an option on the TriCarb® 2800TR and 2900TR.
Chi-Square
Chi-Square acceptable range: 7.63 to 36.19, performed as 20, 0.5 minute repeat
counts and tested at the 99% confidence limits. Chi-Square is a parameter
measured as part of Instrument Performance Assessment (IPA). IPA is an option
on the Tri-Carb 2900TR
Physical Dimensions
The following table displays the physical dimensions of all TriCarb models:
Figure 1-2 Physical Dimensions
Detectors
Two diametrically opposed high performance photomultiplier tubes (PMTs) are
coupled to a light-tight, reflective optical chamber. The detectors are located
below the sample changer at the rear of the instrument.
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