Measuring Functions; Measuring Mode; Quantitative Calculation - Hitachi U-2910 Instruction Manual

2.4 Measuring Functions

2.4 MEASURING FUNCTIONS

2.4.1 Measuring Mode

2.4.2 Quantitative Calculation

UV Solutions program offers measuring modes as listed below:
● Quantitative calculation
● Wavelength scan
● Time scan
This spectrophotometer has a function for calculating sample
concentration upon creating a calibration curve. Following are the
features of this function.
(1) Creation of Calibration Curve
(a) A maximum of 20 standards can be measured, and the
acquired values are connected to each other with
segmented lines or regression lines determined by the least
squares method for generating a calibration curve. It is
also possible to measure each standard up to 5 times and
then obtain the average values for generating a calibration
curve.
(b) The calibration curve can be regenerated upon
re-measuring specific standards.
(c) The calibration curve can be graphically displayed on the
LCD, and the value at each point can be read out by
moving the cursor to each point.
(d) The calibration curve can be graphically plotted with the
printer.
(e) The calibration curve can also be generated upon entering
factor values.
(f) Measurement results and the calibration curve are
displayed jointly on one screen, which permits measuring
on observing the calibration curve.
(g) The fitness of standard values and calibration curve can be
judged by using automatically calculated determining
factors.
(h) The calibration curve can be generated by means of 2 or
3-wavelength calculation.
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