Appendix; Conductivity Standards; Examples Of Temperature Coefficients (Α-Value); Conductivity To Tds Conversion Factors - OHAUS a-AB23EC Mode D'emploi

a-AB23EC Bench Conductivity Meter

7. Appendix

7.1

Conductivity standards

10 μS/cm
T(° C)
6.1 μS/cm
5
7.0 μS/cm
10
8.0 μS/cm
15
9.0 μS/cm
20
10.0 μS/cm
25
11.0 μS/cm
30
12.1 μS/cm
35
Examples of temperature coefficients (α-value)
7.2
Substance at 25 ° C
HCl
KCl
CH3COOH
NaCl
H2SO4
HF
α-coefficients of conductivity standards for a calculation to reference temperature of
25° C
Standard
84 μS/cm
1413 μS/cm
12.88 mS/cm
7.3

Conductivity to TDS conversion factors

Conductivity
At 25 ° C
84 μS
447 μS
1413 μS
1500 μS
8974 μS
12.88 μS
15 μS
80 mS
84 μS/cm
53 μS/cm
60 μS/cm
68 μS/cm
76 μS/cm
84 μS/cm
92 μS/cm
101 μS/cm
Concentration [%]
10
10
10
10
10
1.5
Measurement Measurement
temp.: 15° C temp.: 20° C
1.95
1.94
1.90
TDS KCl
ppm value
40.38
225.6
744.7
757.1
5101
7447
8759
52.168
1413 μS/cm
896 μS/cm
1020 μS/cm
1147 μS/cm
1278 μS/cm
1413 μS/cm
1552 μS/cm
1667 μS/cm
Temperature coefficient α [%/°C]
Measurement
temp.: 30° C
1.95
1.94
1.89
Factor ppm value
0.5048
0.5047
0.527
0.5047
0.5685
0.5782
0.5839
0.6521 48.384
12.88 mS/cm
8.22 mS/cm
9.33 mS/cm
10.48 mS/cm
11.67 mS/cm
12.88 mS/cm
14.12 mS/cm
15.39 mS/cm
1.56
1.88
1.69
2.14
1.28
7.20
Measurement
temp.: 35° C
1.95 2.01
1.94 1.99
1.91 1.95
TDS NaCl
Factor
38.04 0.4755
215.5 0.4822
702.1 0.4969
737.1 0.4914
4487 0.5000
7230 0.5613
8532 0.5688
0.6048
EN-17