Plant Sap Potassium Meter

A photograph of the NTS Plant Sap Potassium Meter by Horiba on white background

Plant Sap Potassium Meter

Regular price $619.00
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Early growth, stem strength, fruit/seed size and plant sugar production are all governed by potassium.

Potassium management is critical in the pursuit of high-production fertility, which is why in-field potassium monitoring can be very productive. Potassium is utilised during fruit and seed filling and is critical to maximising crop yields. However, potassium is often overused in contemporary horticulture and excesses can tie up magnesium and boron. Monitoring sap potassium levels throughout the crop cycle can assist in balancing and optimising potassium application.


  • Meter
  • Sensor
  • Storage case
  • Batteries
  • Calibration solutions (150 ppm and 2000 ppm) – Pipette
  • Sampling sheets x 5
  • Full instruction manual


  • Japanese manufactured specialist ion meter featuring flat sensor technology, which allows measurement of a very small volume of liquid – ideal for plant sap measurements.
  • Measurement range 39 – 3900 ppm.
  • Display range 0 – 9900 ppm.
  • Waterproof.
  • 3 sampling methods available depending on sample volume.
  • Automatic temperature compensation.
  • Auto hold and auto power off.
  • Replacement sensor available.
  • Note: Published crop specific data is limited as this is a relatively new research area. Contact NTS for the NTS Sap Testing Procedure for currently available ideal levels. Comparing data in your crop from season to season while noting yields and insect pressure, as well as making comparisons on sap nutrient status between healthy and suboptimal crops/plants, and comparing young and old leaves, can provide valuable information for fine tuning fertiliser inputs and correcting imbalances.

OPERATING GUIDE Perform a 2 point calibration following the instructions in the instruction manual. Recalibrate before each use (once only if performing several measurements)

SAP TESTING PROCEDURE Apply a few drops of freshly extracted sap solution to the electrode chamber ensuring that both electrodes are covered with solution. Wait for a stable reading. Alternatively apply sap to the paper sampling sheet, ensuring the sheet covers both electrodes

Store in a cool, dry place out of direct sunlight.

Please contact us for more information.

When not in use keep the unit free from dust inside the storage pouch with the plastic cap in place. – Warning : The electrode chamber has a thin glass backing – take care while using and cleaning to avoid damage

Online orders are only available within Australia. For international orders, please contact us.

Click here for detailed shipping information.

Any recommendations provided by Nutri-Tech Solutions Pty Ltd (NTS)
or its Distributors are advice only. As no control can be exercised over storage, handling, mixing, application or use, or weather, plant or soil conditions before, during or after application (all of which may affect the performance of our program), no responsibility for, or liability for any failure in performance, losses, damages, or injuries (consequential or otherwise), arising from such storage, mixing, application, or use will be accepted under any circumstances whatsoever. NTS recommend you contact an Agronomist prior to product application. The Buyer assumes all responsibility for the use of any NTS products.

A photograph of the NTS Sap Extractor on white background
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