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/TDS pocket tester

The EC/TDS Dist6 pocket tester enables you to monitor the conductivity (EC), TDS and temperature simultaneously. The EC, TDS and temperatures values can all be displayed at the same time.

TDS stands for total dissolved solids (i.e., the total amount of dissolved salts in a solution). The total amount of nutrient salts present in the irrigation water influences the capability of the roots to absorb nutrients. It also has a enduring effect on plant growth. For these reasons, it is important to check the TDS content regularly.

The TDS value is closely related to the conductivity value and is also an indication of water hardness. The EC/TDS pocket tester features a swappable probe, adjustable TDS factor, selectable temperature coefficient (ß), a battery-change display, a stability indicator, automatic shut-off, automatic temperature compensation, a water-proof housing and a HOLD function for freezing measured values.

30004105 Dist6 € 196,35
EC/TDS pocket tester with calibration solution
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30001305 Calibration solution, 12.88 mS/cm, 20 ml bag € 3,57
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Measurement range:

Conductivity: 0 to 20 mS/cm

TDS: 0 to 10 g/l

Temperature: 0 to + 60 °C


Conductivity: 0.01 mS/cm

TDS: 0.01 g/l

Temperature: 0.1 °C


Conductivity: ± 2 % of measuring range

TDS: ± 2 % of measuring range

Temperature: ± 0.5 °C

Display: two-character LCD display
Operating temperature: 0 to 50 °C
Power supply:
4 x 1,5 Volt
Run-time: 100 hours
Dimensions and weight: 163 x 40 x 26 mm, 85 g

EC/TDS selectable from 0.45 to 1.00

Temperature coefficient ß selectable 0.0 to 2.4 %/°C



PET 2000

The PET 2000 activity meter can measure the potential absorption of nutrient salts under the same conditions as the actual nutrient salt absorption through the roots. This means that the dissolved salt content is measured in the soil and... ...more Topseller

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