Replacement conductivity electrodes and cells for HORIBA meters, covering everything from ultrapure water at the low end to concentrated brines at the high end. Conductivity is also the basis for TDS, salinity and resistivity readings, so the electrode you choose determines the usable range for all of those.

Cell constant is the thing to get right

The cell constant (K, in cm⁻¹) sets the range where the electrode performs well. Too low a constant in a concentrated sample, or too high a constant in pure water, produces noisy and inaccurate readings even though the meter appears to work.

• K = 0.1 cm⁻¹ — low conductivity: pure and ultrapure water, condensate, deionized water
• K = 1 cm⁻¹ — general purpose: drinking water, surface water, wastewater, most laboratory samples
• K = 10 cm⁻¹ — high conductivity: seawater, brines, concentrated acids and bases, plating baths

General purpose electrodes

• 9382-10D (3014046709) — plastic-bodied conductivity electrode.
• 9383-10D (3200780927) — plastic-bodied conductivity electrode, black body.

Pure and ultrapure water

• 9371-10D (3200878882) — stainless steel bodied electrode for ultrapure water. In very low conductivity water, contact with air rapidly absorbs carbon dioxide and corrupts the reading, so this electrode is normally used in a sealed flow arrangement rather than a beaker.
• Flow Cell (3200844642) — glass flow cell for the 9371-10D and the 300-2C-C cartridge. Keeps the sample isolated from atmosphere for stable low-conductivity measurement.

Laboratory cells

• 3551-10D (3014081712) — cell constant 0.1 cm⁻¹
• 3552-10D (3014081545) — cell constant 1 cm⁻¹
• 3553-10D (3014081714) — cell constant 10 cm⁻¹
• 3574-10C (3014082592) — trace flow cell, cell constant 10 cm⁻¹

Applications

• Drinking water, surface water and wastewater conductivity and TDS
• Semiconductor, pharmaceutical and power plant ultrapure water and condensate monitoring
• Boiler and cooling water cycle control
• Seawater, estuarine and brine salinity measurement
• Plating bath and process chemistry concentration control
• Laboratory QC and reagent water verification
• Soil and irrigation water salinity assessment

Documentation

• HORIBA water quality document library — electrode brochures and manuals

Related items

Conductivity calibration standards (84 µS/cm, 1413 µS/cm, 12.88 mS/cm and 111.8 mS/cm), electrode stands and storage accessories are in the Horiba Parts & Accessories collection.

Browse all HORIBA instruments.