Beckman Coulter UniCel DxC 600, Instructions For Use Manual, Page: 87 / 498

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System Description
Cartridge Chemistry: Calibration Theory
1
Table 1.18 Math Models for Non-Linear Chemistries
Type Formula
Model #1 Math Model #1 is the four-parameter log-logit function most commonly used with
reagents that use antibodies.
Sample values are determined using the calculated curve parameters and the math
model. Values may be calculated directly as this model can be solved for concentration.
Model #2 Math Model #2 is a five-parameter logit function.
This function cannot be solved directly for concentration. The instrument uses an
iterative method to determine the sample value.
Model #3 Math Model #3 is a five-parameter exponential function.
This function cannot be solved directly for concentration. The instrument uses an
iterative method to determine the sample value.
Models #4
through #7 These Models are reserved for future development.
Model #8 Math Model #8 is an alternative to model #2, the five-parameter logit function.
This function cannot be solved directly for concentration. The instrument uses an
iterative method to determine the sample value.
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