Quickly, simply, accurately and economically measure free fluoride ions in aqueous solutions with these fluoride electrodes.

Obtain a more linear response at lower levels and improved response time in ammonia measurements with the Thermo Scientific™ Orion™ High-Performance Ammonia Electrode.

Get quick, reliable and accurate measurements of dissolved ammonia in aqueous solutions with the Thermo Scientific™ Orion™ Ammonia Gas Sensing ISE Electrode.

Measure total residual chlorine quickly and accurately with these chlorine electrodes.

Measure carbon dioxide, carbonate and bicarbonate in aqueous solutions quickly and accurately with the Thermo Scientific™ Orion™ 9502BNWP Carbon Dioxide Electrode.

Measure cyanide ions in aqueous solutions quickly, simply, accurately and economically with these cyanide electrodes.

Measure cupric ions in aqueous solutions quickly, simply, accurately and economically with these cupric electrodes.

Measure potassium in aqueous solutions simply, accurately and economically with these electrodes.

Measure calcium in aqueous solutions simply, accurately and economically with these calcium electrodes.

Extremely stable, reproducible readings with a minimum of electrical noise

Measure nitrate in aqueous solutions simply, accurately and economically with these electrodes.

Ion selective perchlorate electrode with a reproducibility greater than 2%.

Fast, precise measurements in aqueous solutions over a wide range of concentrations.

Typical applications include water/wastewater, soil, dairy, meats, tomato/vegetable products.

Ion selective combination pH electrode with a reproducibility better than 2%.

Measure bromide ions in aqueous solutions quickly, simply, accurately and economically with these bromide electrodes.

Measure lead ions in aqueous solutions quickly, simply, accurately and economically with these lead electrodes.

Combined ion-sensitive electrode with solid membraneinterchangeable flat surface, is ideal for measuring temperatures between 0 to 50 ° C.

Measure free chloride in the range of 1 x 10^-5M to 1M with the Thermo Scientific™ Orion™ Chloride Electrodes.

Efficiently measure ORP and temperature simultaneously without a separate reference electrode in a single instance with these redox/ORP/temp electrodes.

For ammonia and carbon dioxide analyses; tough, chemical-resistant body; permanently bonded membrane/cap assembly—no difficult user assembly required

Measure sodium in aqueous solution quickly, accurately and economically with these sodium electrodes.

Get fast and stable readings using these iodide electrodes.

Make quick, simple, accurate and economical measurement of silver and sulfide ions in aqueous solutions with these electrodes.

Converts activity of a specific ion dissolved in a solution into an electrical potential. Fisherbrand™ Combined Ion-Selective Electrode is compatible with all pH/mV meters or ionometers.

Combined ion-sensitive iodide electrode with solid membrane interchangeable flat surface is ideally delivered with membrane, electrolytic solution and gasket.

Combination ISE for determination of sodium ion concentration

Fast and accurate Ion-selection electrodes do not require an external reference—they're easier to use than separate sensing and reference half-cell electrodes.