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High Technology, Inc.
109 Production Road,
Walpole MA USA 02081
Document Number
OM-E-FC-360-30
Revision Level
Rev. 3
Prepared By
J.S. Bolio
Approved By
S. Titov
Effective date
8/15/2016
Operator’s Manual: HTI BioChem FC-360
Page 80 of 217
HIGH TECHNOLOGY, INC. PROPRIETARY AND CONFIDENTIAL
If the calibration curve has more than one point repeat the previous steps until reaching the desired
number of points.
This step connects in the software the “Methods” window with the “Calibrators” window, where the
calibrator concentration must be entered. There will be as many calibrators as points entered in the
method settings. For that, go to the “Calibrator Parameters” section.
If only one calibration point is programmed, the system will assume the second point of reference is“0”.
If two or more points are programmed, the system stops using “0” as a point of reference, and a point of
concentration “0” should be programmed.
Possible Interpolation types are:
Linear:
Conc = a • Abs + b
Potential:
Conc = 10
(a • log (Abs) + b)
Exponential:
Conc = e
(a • Abs + b)
Polynomial:
Conc = a
0
+ a
1
• Abs + a
2
• Abs
2
+ … + a
n
• Abs
n
where
n
is the number of programmed calibrators.
Cubic Spline
Multilinear
When a method uses a calibration curve with more than 2 points, it’s recommended to evaluate the best
interpolation for that set of calibrators. For example, notice the following set of concentrations and
absorbances that constitute a calibration curve: