t [°C]
κ [mS/cm]
0,001 mol/l
κ [mS/cm]
0,01 mol/l
κ [mS/cm]
0,02 mol/l
κ [mS/cm]
1,00 mol/l
0
0,776
1,521
65,41
1
0,800
1,566
67,13
5
0,896
1,752
74,14
10
1,020
1,994
83,19
15
1,147
2,243
92,52
16
1,173
2,294
94,41
17
1,199
2,345
96,31
18
0,127
1,225
2,397
98,24
19
0,130
1,251
2,449
100,16
20
0,133
1,278
2,501
102,09
21
0,136
1,305
2,553
104,02
22
0,138
1,332
2,606
105,54
23
0,141
1,358
2,659
107,89
24
0,144
1,386
2,712
109,84
25
0,147
1,413
2,765
111,8
Reference solutions
are available as accessories specific to each conductivity range.
(See our main product catalog, pages 16.06 and 16.07
Solutions for calibrating conductivity probes are non-buffered systems. Their conduc-
tivity values are not stable; they are affected even by small amounts of contamination
or dilution (e.g. water droplets on the probe). This applies in particular at low conduc-
tivity levels.
Clean measuring cells
Before starting calibration it is important to ensure that the probe is clean. Any conta -
minant residues should be rinsed off using distilled water. The probe should be dried
and then rinsed with the recommended calibration solution.
Examples of typical conductivities
Distilled water
< 5
μS/cm
Rain water
50-100
μS/cm
Drinking water
500
μS/cm
Mineral water
> 1000
μS/cm
Industrial effluent
5
mS/cm
Sea water
50
mS/cm
1 mol/L NaCl
85
mS/cm
1 mol/L HCl
332
mS/cm
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