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Chapter 4 – Using the Instrument
•
Normally, Measure Standards is set to Yes. When set to No,
absorbance values may be entered manually.
•
The minimum number of standards required will depend on the
curve fit.
Linear:
2
Linear through 0:
1
Quadratic:
3
Quadratic through 0: 2
Normally, a calibration contains more than the minimum number
of standards.
•
Timers and UV
calc
equations can be used, if required.
3.
Press the Load Method function key to load a previously saved
method from the instrument Library or from disk.
4.
Clear the beams or insert suitable blank(s) and close the lid of the
sample compartment.
5.
Press Zero to zero the instrument.
6.
Press the Calibrate function key.
Follow the on-screen instructions, which will depend on whether a cell
programmer is in use and on the number of standards and replicates.
7.
View the graph and statistics.
This is done when the calibration is complete. Change the curve fit if
necessary.
8.
Press the Save Method function key to save the calibrated method
in the instrument Library or to disk.
9.
Press Run to analyze samples using the calibrated Quantitation
method.
44
Evolution 300 and Evolution 600 User’s Guide
Thermo Electron Corporation