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COMBI 5000

COMBI 5000, complete case

COMBI 5000, complete case

pH + Activity + EC + Moisture + Temperature

5 measurements for rapid control of plant nutrition with only one device

With the COMBI 5000 in the hand, you have the most important parameters to determine the nutritional status of your plant stock professionally and quickly. The COMBI 5000 uses the latest microprocessor technology and has an automatic sensor recognition. When a sensor is attached, the unit changes automatically to the corresponding measuring mode. The automatic buffer recognition during calibration also ensures a high operating comfort. The handy, splash-proof device has menu languages German and English (optional: French, Italian, Spanish, Russian).

The COMBI 5000 is delivered in a sturdy aluminum case, in which all accessories are kept safe and at hand.

pH measurement

pH measurement

Technical data Basic unit COMBI 5000:

  • Housing: splash-proof, rugged
  • Connector: BNC plug and 8-pin-plug
  • Power: > 4000 measurements, 9-Volt-battery
  • Display: alphanumeric, reflective
  • Dimensions: 180 × 85 × 50 mm
  • Weight: 280 g

pH measurement

pH is one of the most important parameters in the plant nutrition. The absorption of nutrients by the plants is highly dependent on pH. Being specially developed for soil analysis, the electrode measures pH directly in the soil.

  • Measuring range: 0 – 14 рН
  • Resolution: 0.01 pH
  • Accuracy: 0.02 pH
  • Calibration: automatic
  • Probe: gel-filled insertion probe
  • Probe length: 125 mm
  • Application: pH measurement directly in soils / substrates and in liquids
EC measurement

EC measurement

EC measurement
Electrical conductivity of an aqueous solution is directly related to the concentration of the dissolved salts. For
plant nutrition control, it is essential to measure EC of process water and nutrient solution, especially in closed and hydroponic cultivation.

  • Measuring range: 0 – 200 mS
  • Resolution: 0.001 – 0.01 mS
  • Accuracy: ± 2 % from measured value
  • Calibration: automatic
  • Probe: plastic with platinum sensors
  • Probe length: 125 mm
  • Application: conductivity measurement in liquids, e.g. nutrient and stock solutions

Multi probe for simultaneous measurement of activity (salinity), soil moisture and temperature
The new multi-probe is a significant further development of the previous measuring probe for direct salinity
(„activity“) measurement in the soil or substrate. In this measurement method, the measurement result depends, besides other factors, on temperature and soil or substrate moisture. These two values can now be measured with the new COMBI 5000 multi-probe.

This is made possible due to a high-frequency capacitance measurement integrated into the probe according to
the FDR technology in a measuring range of 0.5% to 80% (volumetric). The temperature measurement is carried out in the range of -10 ° C to + 50 ° C by a fast-reacting NTC sensor spattered in the probe tip.

Measurement of activity (salinity), soil moisture and temperature

Measurement of activity (salinity), soil moisture and temperature


  • Probe: PVC, Ø 10 mm
  • Probe length: 250 mm
  • Sensors: FDR capacitive (moisture), NTC (temperature), bi-pol (salinity)
  • Temperature compensation: automatic
  • Applications: measurement of salinity, temperature, soil and substrate moisture

Activity measurement (salinity):

  • Measuring range: 0 – 9.99 g/l of active salts
  • Resolution: 0.01 g/l of active salts
  • Calibration: factory calibration, stable

Temperature measurement:

  • Measuring range: -10 to +50°C
  • Resolution: 0.1°C

Moisture measurement:

  • Measuring range: 0.5% to 80%
  • Resolution 0.1 %
  • Calibration: 0%: in air and 99.9%: in water

Delivery contents:

  • COMBI 5000 basic unit
  • pH insertion probe
  • buffer solutions pH 4 and pH 7, 100 ml each
  • EC probe
  • calibration solutions 1.4 mS and 111.8 mS, 50 ml each
  • multi-probe, 250 mm
  • spray bottle with snorkel, 250 ml
  • piercing pin
  • volume measuring cup, 100 ml
  • manual
  • aluminium transport and storage case

Item-no.: 10900: COMBI 5000 with pH probe, EC probe, multi-probe and solutions in a case

Instruction manual as PDF file.

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