YSI MultiLab 4010P-1 - Manual (Page 36)

pH value MultiLab 4010-1
36 ba76141e03 03/2014
5.2.5 Calibration points
Calibration can be performed using one to five buffer solutions in any order
(single-point to five-point calibration). The meter determines the following
values and calculates the calibration line as follows:
22. Set the nominal buffer value for the measured temperature with
<><>.
23. Accept the calibration value with
The calibration display for the next buffer appears (voltage display).
24. If necessary, use to finish the calibration.
The calibration record is displayed.
or
Continue calibrating using the next buffer with
After the fifth buffer has been measured the calibration is automat-
ically finished. Then the calibration record is displayed.
The calibration line is determined by linear regression.
Calibration Determined values Displayed calibration data
1-point Asy  Zero point = Asy
 Slope = Nernst slope
(-59.2 mV/pH at 25 °C)
2-point Asy
Slp.  Zero point = Asy
 Slope = Slp.
3-point to 5-
point Asy
Slp.  Zero point = Asy
 Slope = Slp.
The calibration line is calculated
by linear regression.
You can display the slope in the units, mV/pH or % (see section
9.1.1 S
ETTINGS FOR P H MEASUREMENTS , page 59).