This probe is great for environmental testing for salinity, total dissolved solids, or conductivity in water samples. Biology teachers can use this probe to demonstrate diffusion of ions through membranes or to monitor changes in ion levels in aquatic systems. Chemistry students can use it to investigate the difference between ionic and molecular compounds, strong and weak acids, or ionic compounds that yield different ratios of ions. The Conductivity Probe can monitor concentration or conductivity at three different sensitivity settings.

The probe has a fast response time, reaching 98% of full value in less than 5 seconds.

The Conductivity Probe uses alternating current at its electrodes; this prevents polarization and electrolysis, so that solutions being tested are not fouled. Corrosion of metal electrodes is not a problem with this epoxy-body graphite electrode. It has built-in temperature compensation, which allows calibrations in the lab, and then making measurements outdoors without temperature changes affecting conductivity readings.

We need 8 of these. When you purchase this item, your money will be deposited in the NEHS Science Dept. bank account and equipment will be purchased on your behalf. Thank you.