Conductivity meters & cells

The cell constant should match the conductivity of your samples. A low K, such as 0.2, measures pure and ultrapure water accurately, for example the conductivity sensor K = 0.2; for checking water from ultrapure and pure water systems that is the usual choice. A K of about 1 covers most general samples, and a high K, such as 10, suits concentrated solutions and brines, like the glass conductivity electrode, K = 10. The measuring range of each cell is on its product page. Unsure? Ask sales@luminixhealth.com.

A pocket tester is for quick checks, such as rinse water or a water treatment unit, where a rough value is enough. A portable meter with a separate cell suits field work and measurements at several points, and it is robust and runs on batteries. A benchtop meter, like the analogue conductivity meter, belongs in the lab for routine series, often with temperature compensation and data storage. If you also measure oxygen or pH, a combined instrument from dissolved oxygen and multiparameter meters saves a second device. Unsure? Ask sales@luminixhealth.com.

Calibrate with a standard close to the conductivity you measure. For low values, such as purified water, use a low standard like conductivity solution 84 µS/cm, 500 ml. The 1413 µS/cm standard suits general samples, and 12.88 mS/cm suits concentrated ones, such as conductivity solution 12.88 mS/cm, 500 ml. Conductivity depends strongly on temperature, so use the meter's temperature compensation and the reference temperature on the bottle. Pour off a small portion; never return used standard to the bottle. More standards are in pH buffers and conductivity standards. Questions? Ask sales@luminixhealth.com.

A glass cell is the lab choice: easy to clean and resistant to aggressive media and solvents, such as the glass conductivity electrode, BNC, K = 10. A plastic cell is more robust and suits field use and routine samples where breakage is a risk. The connector must match your meter; BNC is common, but other plugs exist, and the product page states the type. Cables, holders and storage solutions are in pH and electrochemistry accessories. Not sure whether a cell fits your meter? Send both product names to sales@luminixhealth.com.

A conductivity meter and its cell measure how well a solution carries current. The cell constant is the geometry that converts conductance to conductivity, and it is calibrated with a standard. Temperature compensation matters because conductivity rises with temperature.

A pH meter is a voltmeter on a glass electrode. The voltage tracks hydrogen-ion activity, and the electrode is converted to pH only after it is adjusted with buffers of known value. Conductivity measures how well a solution carries a current, which for dilute salts tracks concentration. Dissolved oxygen and titration are further electrodes on the same idea: a sensor, a standard, and a reading that is only as fresh as the calibration. Buffer values and chemical identity sit on PubChem. Accreditation of the calibration laboratory is the field of BELAC and EURAMET.

This shelf belongs to pH & electrochemistry, inside Lab instruments. Luminix Health distributes this range for laboratory use.

The neighbouring shelves are pH electrodes & sensors, pH meters, Dissolved oxygen & multiparameter meters, Titrators & electrochemistry systems and pH & electrochemistry accessories. The category above this shelf is pH & electrochemistry.

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