Conductivity meters are used to analyze the conductivity of a substance, usually reported as an inverse function of resistivity. ‘Resistivity’ is always measured in ohms/cm. ‘Conductivity’ is measured in mhos/cm.


Regarding conductivity, this is the ability of water to conduct an electric current. Salts or chemicals which dissolve in water occasionally break down positively and/or negatively charged ions. The result are ‘free ions’ which can conduct electricity. Thereby, ion concentration measurements are a necessity to indicate how pure water is.


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GAOTek portable conductivity testers are ideal for application in water conditioning, medical environments, food and beverage industries, laboratory settings, and in other industrial applications. Lower conductivity means pure, natural water which is a necessity to several different business categories and work settings.

Features on GAOTek’s line of conductivity testers include a large LCD display, linear or pure water compensation, automatic temperature compensation, calibration reminders, a stability indicator, USB communication interface to allow for easy data transfer, multi-mode power scheme, built-in temperature sensors, and the most advanced technology to get the job done.

Conductivity measurements are key to quality control for things like testing water purity, verifying water quality, estimating ions per solution, and measuring elements in process solutions. Please note any water conductivity tester should be calibrated frequently to ensure the accuracy of the measurement.

Every day, GAOTek conductivity testers are used in the United States, Canada, and globally across numerous industries. Simply turn on, insert, and read the results instantly. For routine analysis and quality control, you’ll be glad to have a device so consistent.

High-performance conductivity meters from GAOTek are high quality in design, reliable in rugged environments, accuracy in readings, and most importantly, affordable. Inspecting and testing has never been easier. Compact and portable, take this instrument in the field and conveniently work in even the most complex of conditions. Browse yours today from GAOTek.


With our water quality meters, the measurement process can be carried out effectively and efficiently, ensuring a great product experience.

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This Water Hardness Meter with 5 Point Calibration (High Accuracy) is designed to measure the water quality of calcium and magnesium ion concentration.


This portable ‘Multi-Parameter Water Quality Meter (ORP, TDS and Salinity)’ has four-channel units design (pH/px, conductive, DO unit) and is useful in automatic identification of 25 kinds of buffer solutions.


This Underground Pipes Water Leak Detector with Accurate Detection is designed using digital signal processing technology to detect the ambient noise interference.


This portable ‘Vibration Meter with RS-232/USB Interface (Manage Data)’ is an easy-to-use device which measures vibrations and oscillations in many machines and can store a total of 1000 data points.


This Water Quality Meter with 8 Measure Modes (Auto Temp) to measure the Resistivity, pH, Conductivity, ORP, Salinity, Ion concentration, TDS and Dissolved Oxygen of the liquids.


This Water Quality Meter with 12 Multiparameter (Data Storage) is suitable for measuring the pH, mV, Conductivity and TDS of liquids and comes with an extended data storage memory of up to 500 readings.


This Water Quality Meter with Advance 12 Multiparameter (Reset) is designed to measure the Conductivity, ORP, pH, TDS, Salinity, and Resistivity of the liquids and reset all parameters to default settings automatically.


This Water Quality Meter with 11 Multiparameter (Basic) is designed to measure ORP, pH, and DO of the liquids.


This Water Quality Meter with 15 Multiparameter (Advanced) is designed to provide high reliable water quality data by measuring the parameters pH, ORP, Ion, Conductivity, TDS, Salinity, Resistivity and DO of the liquids.





This DO Controller Polarographic Sensor (10 Parameters Setting) is designed for monitoring the dissolved oxygen concentration and saturation percentage in the water with 1 or 2 points calibration.


This Dissolved Oxygen Meter with Salinity Correction (Reset) is designed to measure DO of the liquids in the range from 0.00 mg/L ~ 20.00 mg/L.


This Dissolved Oxygen Meter with High Accuracy (Hold Function) is designed to measure DO of the liquids in the range of 0.00 mg/L~20.00 mg/L.



ID: GT00Y500ZY

GAOTek Water Depth Meter with Low Power Consumption detects water depth under maximum 200 meters in lake, river and sea with high accuracy.

ID: GT00Y500ZZ

GAO Tek Water Depth Meter with 0.5 % Accuracy detects water depth under maxium 500 meters in lake, river and sea reliably.


This Multi-Parameter Water Quality Meter (pX and pH, Conductivity) is designed with 200 sets of data storage and the pX/pH measure the potential (mV), pH, pX and ion concentration.


This multi-parameter follows GLP practice and can store 2200 sets of measuring data. It has three measurement modes continuous, timing, and balance mode.