pH/°C meter for soil Log on demand - GroLine



Item no. HI-98168

More details

608 €

The HI-98168 is a rugged, waterproof, portable pH meter that allows for the direct measurement of soil pH. This meter is supplied

with a specialised pH electrode that has a rugged conical tip for insertion into soil.

Application importance

The measurement of pH in agricultural activities is very important due to the influence it has on the growth of the plant. Soil can be acid, neutral or alkaline according to its pH value. Most plants prefer a pH range from 5.5 to 7.5; but some species prefer more acid or alkaline soils. Nevertheless, every plant requires a particular range of pH for optimum growth.

Data Logging

The log-on-demand feature allows users to store up to 200 samples that can be later transferred to a PC with the HI-920015 USB cable and HI-92000 software.

About the probe

The HI-12923 pH electrode that is supplied with the meter is uniquely designed with a conical tip and a triple ceramic junction for improved performance in soils that have a low moisture content.

The probe has a built in amplifier to reduce noise from humidity that can affect the probe connection to the meter.

The HI-12923 connects to the meter with a quick-connect, waterproof DIN connector, allowing for a secure, non-threaded attachment.

Refillable - As electrolyte is lost over time it can be replenished to extend the life of the electrode.

About the triple ceramic junction - The outer reference has three ceramic frits that allow electrolyte to flow at a high rate from the inside of the probe at the outside. A higher flow rate allows for a pH measurement of soil with low moisture.

More on the Conical Tip - The conical tip is made of durable LT glass and allows for direct measurement in soils. In the case any rocks are present, an auger is provided to make a hole for the probe.


 Range -2.0 to 20.0; -2.00 to 20.00 pH; -2.000 to 20.000pH
 Resolution 0.1 pH; 0.01 pH; 0.001pH
 Accuracy ±0.1 pH; ±0.01 pH; ±0.002pH
 Calibration Up to five-point calibration, seven standard buffers available (1.68, 4.01, 6.86, 7.01, 9.18, 10.01, 12.45) and five custom buffers
 Temperature compensation Automatic or manual from -20.0 to 120.0°
 Range ±2000mV
 Resolution 0.1 mV
 Accuracy ±0.2mV
 Relative mV offset range ±2000mV
 Range -20.0 to 120.0°C
 Resolution 0.1
 Accuracy ±0.4°C
Additional specifications
 pH probe HI-12923 Glass body; conical tip, refillable pH electrode with internal temperature sensor, quick DIN connector and 1m cable
 Slope calibration from 80 to 100%
 Log on demand Up to samples (100pH, 100mV)
 PC Connection opto-isolated USB with HI-92000 software and micro USB cable
 Imput impedance 1012 Ω
 Battery Type/Life 1.5V AA batteries (4) / approximately 200 hours of continuous use without backlight (50 hours with backlight)
 auto-off user selectable; 5, 10, 30, 60 min, disabled
 Environment 0 to 50°C; RH 100% IP67
 Dimensions/Weight 185 x 93 x 35.2mm / 400g
Warranty 2 years (probe 6 months)
Ordering information HI-98168 is supplied with HI-12923 pH electrode, HI-721319 ground auger, HI-7004M pH 4.01 buffer solution (230ml), HI-7007M pH 7.01 buffer solution (230ml), HI-700663 Cleaning solution sachets for soil deposits, HI-7000664 cleaning solution for humus deposits, HI-7051M Soil Test Solution (230ml), 100ml plastic beaker (2), HI-92000 PC software, HI-920015 micro USB cable, 1.5V AA batteries (4), quick reference guide, instruction manual, and quality certificate in a HI-720161 hard carrying case with custom insert.

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