Xylem ProLab 4000 MULTIPARAMETER BENCHTOP METER User Manual
Page 76
pH
ProLab 4000
76
ba75646e02
01/2010
* Brand names or trade names are trademarks of their respective owners
protected by law (see page 207).
Calibration points
Calibration can be performed using one to five buffer solutions in any
order (single-point to five-point calibration). The measuring instrument
determines the following values and calculates the calibration line as
follows:
19
Reagecon TEC *
2,000
4,010
7,000
10,000
25 °C
20
Reagecon 20 *
2,000
4,000
7,000
10,000
13,000
20°C
21
Reagecon 25 *
2,000
4,000
7,000
10,000
13,000
25 °C
22
Riedel-de Haen *
2,000
4,000
7,000
10,000
20°C
No.
Buffer set *
pH values
at
Note
The buffers are selected in the Calibration sensor menu (see
page 73).
Displayed calibration data
1-point
z Zero point
z Slope = Nernst slope (-59.16 mV/pH at 25 °C)
2-point
z Zero point
z Slope
3-point to
5-point
z Zero point
z Slope
The calibration line is calculated by linear regression.