OHAUS ST400 Manuel D'instructions page 28

ST400 & ST400M Portable Meter
Table 2 Examples of temperature coefficients (α-value)
6.2
Substance at 25 ° C
HCl
KCl
CH3COOH
NaCl
H2SO4
HF
α-coefficients of conductivity standards for a calculation to a reference temperature of 25° C
Standard
84 μS/cm
1413 μS/cm
12.88 mS/cm
Concentration [%]
10
10
10
10
10
1.5
Measurement Measurement
temp.: 15° C temp.: 20° C
1.95 1.95
1.94 1.94
1.90 1.89
Temperature coefficient α [%/°C]
1.56
1.88
1.69
2.14
1.28
7.20
Measurement
temp.: 25° C
1.95
1.94
1.91
EN-25
Measurement
temp.: 30° C
2.01
1.99
1.95