horiba 6582S-10C, Инструкция по эксплуатации

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60
C
haracteristics of potassium ion
selective electrode
 Measurement range
The range where linearity is established between the logarithm of the ion
concentration and the electromotive force is called the measurement
range.
In general, the range for measuring ion concentration using ion selective
electrodes is a maximum of around 1

10
-1
mol/L and a minimum of around
1

10
-6
mol/L to 1

10
-5
mol/L.
Furthermore, when lower concentration is measured where the linearity is
not established, perform calibration at two points in the lower concentration
range.
Fig. 8 Calibration curve of potassium ion selective electrode
0.01 0.1 1 10 100 1000
100
50
0
-50
-100
-150
-200
1×10
-6
1×10
-5
1×10
-4
1×10
-3
1×10
-2
Linearity is not seen. Linearity is not seen.
Linearity is seen. Linearity is seen.
Electromotive force [mV]
K
+
concentration [mg/L]
K
+
concentration [mol/L]