STELZNER® agricultural measurement systems

Measurements of dissolved salts, water hardness, temperature, EC or TCS in liquids and filtered soil solutions, with the Pockettester and Flow-Meter: for pipelines, hydroponics, ponds, swimming pools and in the laboratory

EC 2000

Measuring conductivity in a solution

Electrical conductivity determines the electrical current between two points (electrodes) of different voltage potentials in a liquid. The conductivity increases as the amount of salt, acid or base contained in a solution increases. Conductivity is measured in units of mS/cm. The scale for water-based solutions starts with pure water (conductivity equals 0.05 µS/cm at 25 °C) and ends with a basic solution of 1.0 mS/cm (e.g., potassium solutions). Potable or surface water has a conductivity value in a range from 0.1 to 1.0 mS/cm. Conductivity is measured using a measuring cell which consists (in the simplest case) of two similar electrodes. An AC voltage is applied to an electrode and this causes the ions in the solution to move in relation to the electrode. More current flows between the electrodes when more ions are contained in the solution. Using this measured current, the meter calculates the conductance of the solution and then, based on the cell specification, the actual conductivity value. Areas of applications: For horticulture, the conductivity value is also referred to as the EC value. The EC value is an indicator for the quantity of dissolved salts. It is specified in mS/cm. The EC 2000 is used in all areas of cultivation and irrigation systems, including classic floriculture, substrata production and soil-free cultivation. It enables you to monitor basis solutions and nutrient solutions during fertilization. You can also check the salt content in substrata mixtures. Please note: For the basis and nutrient salt solutions with high salt content, we recommend using the glass-platinum conductivity electrode instead of the carbon conductivity electrode. In solutions with high salt concentrations, the glass-platinum conductivity electrode has less polarization and thus provides improved linearity and more accurate readings. The EC 2000 is a precise measuring instrument with temperature compensation that can be calibrated. It is used for quickly determining the mS/ EC values in solutions from 0 – 20 mS/cm (with a carbon conductivity electrode) or 0 – 200 mS/cm (using a glass-platinum conductivity electrode).

30004094 EC 2000 conductivity meter € 297,50
Conductivity meter, for conductivity electrode with miniature plug (5-pin), Base unit without electrode
30004095 EC 2000 Set € 470,05
Conductivity meter complete with case, EC 2000 with carbon conductivity electrode Calibration solution, 1.4 mS/cm and 12.88 mS/cm Beaker, technical manual
30004095-P EC 2000 Set € 535,50
Conductivity meter, complete with case, EC 2000 with glass conductivity electrode, Calibration solution 1.4 mS/cm, 12.88 mS/cm and 111.8 mS/cm beaker, technical manual
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30001303 Calibration solution, 1.4 mS/cm 100 ml bottle € 7,91
30001304 Calibration solution, 111.8 mS/cm 100 ml bottle € 7,91
30001308 Calibration solution, 12.88 mS/cm 100 ml bottle € 7,91
other calibration solutions are available on request
30002014 Beaker for measuring volume, 100 ml with cover € 3,57
30004093 Carbon conductivity electrode € 148,75
1 metre cable, temperature sensor NTC 10 K with miniature plug (5-pin), for EC 2000
30004195 Glass-platinum conductivity electrode € 201,11
1 metre cable, temperature sensor NTC 10 K with miniature plug (5-pin), for EC 2000
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Measurement range:
Conductivity: 0 to 20 mS/cm
with carbon conductivity electrode
and 0 to 200 mS/cm
with glass-platinum conductivity electrode
Temperature: +5 to 45 °C

Conductivity: 0.1 mS/cm

Temperature: 0.1°C

Precision: Conductivity: 0 to 20 mS/cm ±2 %
20 to 200 mS/cm ±5 %
Temperature: ±0.2 °C
Display: Liquid crystal display
Operating temperature: +5 to 45 °C
Power supply: One nine-volt battery, size 6LR61
Protection degree: IP40
Dimensions and weight: 125 x 75 x 45 mm, 190 g
Dimensions and weight with case: 370 x 290 x 90 mm,
approx. 2.9 kg


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