Quickly, simply, accurately and economically measure free fluoride ions in aqueous solutions with the combination Thermo Scientific™ Orion™ Fluoride Electrodes.

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

Measure sodium in aqueous solution quickly, accurately and economically with Thermo Scientific™ Orion™ Sodium Electrodes.

Allows quick and easy determination of concentration and activity of a variety of dissolved ions.

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

Allows quick and easy determination of concentration and activity of dissolved gases. Mettler Toledo perfectION Gas-Sensing Combination Electrodes are resistant to any known organic chemical present whose temperature is less than 392°F (200°C).

Combined ion-sensitive electrode with solid membrane interchangeable flat surface where ideally calibration should be carried out as often as possible (Less than once a day).

Efficiently measure ORP and temperature simultaneously without a separate reference electrode in a single instance.

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

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

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

Measure nitrate in aqueous solutions simply, accurately and economically with Thermo Scientific™ Orion™ Nitrate Electrodes.

This unique combined ion-sensitive electrode with a solid membrane interchangeable flat surface, with an analysis time generally less than one minute, is rarely necessary to have filtering or distillation sample preparation steps.

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

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

Reference electrolytes for ion selective electrodes.

The combined electrodes type 800 are excellent in their handling and offer the additional opportunity to also measure small sample volumes, as the ion selective and the reference electrodes are combined in a compact rod. Furthermore, they are convincing with their exceptionally great price/performance ratio.

The combined electrodes type 800 are excellent in their handling and offer the additional opportunity to also measure small sample volumes, as the ion selective and the reference electrodes are combined in a compact rod. Furthermore, they are convincing with their exceptionally great price/performance ratio.

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.

Measure cyanide ions in aqueous solutions quickly, simply, accurately and economically with the Thermo Scientific™ Orion™ Cyanide Electrodes.

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

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

Combination ISE for determination of sodium ion concentration

For bromide, chloride, copper, cyanide, fluoride, lead and silver/sulfide determinations

Measure calcium in aqueous solutions simply, accurately and economically with the Thermo Scientific™ Orion™ Calcium Electrodes.

Measure cadmium ions in aqueous solutions quickly, simply, accurately and economically.

Measure bromide ions in aqueous solutions quickly, simply, accurately and economically with Thermo Scientific™ Orion™ Bromide Electrodes.

Get fast and stable readings using Thermo Scientific™ Orion™ Iodide Electrodes.