Introduction
The conductivity probe can be used to determine the concentration of ions in a sample. It cannot tell which specific ions are present.
The probe functions by measuring the conductivity of a solution. The probe contains two electrodes. When inserted into a solution, the flow of electric current from one probe to the other can be measured. In a solution, electricity is conducted by ion transport, so the more ions present in the solution, the greater the capacity to conduct a current.
Setup and Calibration
The conductivity probe is connected to a small box with a toggle switch at the end. Set this switch to 0-2000.
Connect the conductivity probe to the channel 1 port on the side of the Vernier interface box.
Place the tip of the probe in distilled water.
Start Logger Pro by double-clicking the icon (if available) or clicking Programs - Vernier Software - Logger Pro.
The meter is on the bottom left side of the screen. It displays conductivity values in units called microsiemens (uS).