Benchtop Conductivity Test Meter

DDS-22C conductivity test meter electrical conductivity meter (EC meter) measures the electrical conductivity in a solution. Commonly used in hydroponics, aquaculture and freshwater systems to monitor the amount of nutrients, salts or impurities in the water.
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Product Details

Benchtop Conductivity Test Meter

bench top conductivity meter、Feature

conductivity test meter using high speed microprocessor chip, stable performance

1408μs/cm electric conductivity standard calibration plug, fast and convenient

Unique 1 point calibration, suitable for various calibration solution

Conductivity test meter can save and extract data

Bended metal electrode rack, can be placed at right or left side

High accurate electrode and automatic temperature compensation, test result be more precise

Technical data

Measuring range












0.01 ms/cm






Temperature coefficient


corresponding electrode constant




Working condition

temperature: 5~35°C, RH<85%
Power: 220V±10%, 50Hz ± 1Hz, 
No notable vibration
No strong magnetic field interference(except for geomagnetic field)




1.52 kg

Benchtop Conductivity Test Meter

About Conductivity

Conductivity:The conductivity of water is usually used to indicate the purity of water. If the conductivity is high, it means that the content of conductive minerals in water is very high, and the purity of water is very low. If the conductivity is very low, it indicates the minerals that can be ionized in water. Rarely, the purity of water is relatively high. For example, the conductivity of high-purity water is EC=0.1.0us/cm; the conductivity of ordinary drinking water is 1~10 us/c.

Benchtop Conductivity Test Meter

What is water conductivity and resistivity

Resistivity The conductivity of water is related to the resistance value of water. Large resistance value, poor conductivity, low resistance value, and good conductivity. According to Ohm's law, at a certain temperature, the resistance value R of water is inversely proportional to the vertical cross-sectional area F of the electrode and proportional to the distance L between the electrodes: R = ρ & # 183; L / F where ρ is Resistivity, or specific resistance. The unit of resistance is ohm (ohm, code Ω), or microohm (μΩ), the international unit (SI) unit of 1Ω equal to 106μΩ resistivity is ohm (Ω & # 183; M). If the cross-sectional area F of the electrode is made 1CM2, then the resistance value is equal to the resistivity. The resistivity of water is related to the amount of salt in the water, the ion concentration in the water, the charge of the ions, and the speed of the ions. Therefore, the pure hydroelectric rate is very large, and the ultra pure water resistivity is even greater. The purer the water, the greater the resistivity. Conductivity Due to the presence of various dissolved salts in water, it exists in the form of ions. When a pair of electrodes is inserted in water, after being energized, the charged ions will move in a certain direction under the action of an electric field. The degree of strength of water's electrical conductivity is called the conductivity S (or conductance). Electrical conductivity reflects the amount of salt in the water and is an important indicator of the purity of the water. The purer the water, the less the salt content, the greater the resistance and the smaller the conductivity. Ultrapure water can hardly conduct electricity. The magnitude of the conductance is equal to the inverse of the resistance, ie: S = 1 / R

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