PASCO PS-2172 Advanced Chemistry Sensor - Manual (Page 9)

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Model No. PS-2172 Specifications
9
Appendix B: Reference Solutions for
Conductivity Calibration
Reference
Solution
Approximation
Normality of
Solution
Method of Preparation Temperature
(°C)
Electrical
Conductivity 1
(µS/cm)
A 1 74.2480 g of KCI weighed in air per 1 L of
solution at 20 °C 0 65176
18 97838
25 111342
B 0.1 7.4365 g of KCI weighed in air per 1 L of
solution at 20 °C 0 7138
18 11167
25 12856
C 0.01 0.7440 g of KCI weighed in air per 1 L of
solution at 20 °C 0 773.6
18 1220.5
25 1408.6
D 0.001 Dilute 100 mL of solution C to 1 L at 20 °C 0 77.69
18 127.54
25 148.93
1 Excluding the conductivity of the water used to prepare the solutions. These tabulated conductivity values are in international
units. When using measuring instruments calibrated in absolute units, multiply the tabular values by 0.999505