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SKU HI98168 Category

Professional Soil pH Meter GroLine - HI98168

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Designed to bring simplicity to pH testing to environmental and agricultural testing, the HI98168 GroLine Professional Portable Soil pH Meter is engineered for direct insertion in soil. The specialized probe features a conical tip and a triple ceramic junction for improved performance in soils that have a low moisture content.

  • ±0.002 pH Accuracy
  • Comes with all the necessary solutions and batteries- everything you need to get started measuring right away.
  • Specialized electrode for spot checking the pH of soil and soil slurries.

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5 in stock

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Professional Soil pH Meter

Increased Traceabilty

Ensure that your data can be trusted with GLP data. Accessible by a fixed dedicated key, this data includes date, time, pH calibration buffers, offset, and slope.

Versatile Data Logging

The HI98168’s log-on-demand feature allows you to store up to 100 readings. The AutoEnd button can be used during measurement to hold the first stable reading on the display automatically.

Superior Field Usability

Designed to withstand the knocks, drops, and spills of real life, the IP67 body ensures top performance in any environment. Your meter is better protected against dust and water intrusion from any direction. The Quick Connect DIN provides a water-tight seal without twisting.

Your measurements require detailed attention; so should your electrode. The HI98168 Meter features a built-in probe that has been carefully designed to measure the pH of soil. 

Triple Ceramic Junction

The HI12923 has three ceramic frits that allow electrolyte to flow at a high rate from the inside of the probe to the outside. A higher flow rate increases the accuracy of measurements of soil with low moisture.

Conical Glass Tip

The conical shaped tip design allows for penetration into soil and soil slurries.

Glass Body

A glass body is easy to clean, is chemically resistant, and quick to reach thermal equilibrium for a faster, more stable measurement.

Professional Soil pH Meter

We believe that buying a meter should be simple. Your Professional Portable Soil pH Meter is equipped with everything you need for successful testing right out of the box. 

Cleaning Solution for Soil and Humus Deposits

Your Soil pH Meter comes with cleaning solution that has been engineered to keep your electrode free from organic materials found in soil. This concentrated combination of detergents cleans your tester quickly and effectively so that your tester stays in optimum condition. 

pH 4 & 7 Buffer Sachets

When performing a pH calibration it is important that the correct buffers are used. We include some start buffers to get you going. 

Complete Package

Your meter, probe, and accessories are all neatly packaged in a rugged carrying case to ensure that you have everything you need for on-the-go field testing.




-2.0 to 20.0 pH; -2.00 to 20.00 pH; -2.000 to 20.000 pH


0.1 pH; 0.01 pH; 0.001 pH


±0.1 pH; ±0.01 pH; ±0.002 pH


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°C (-4.0 to 248.0°F)



±2000 mV


0.1 mV


±0.4 °C / ±0.8 °F

Relative mV Offset Range

±2000 mV



20.0 to 120.0 °C (-4.0 to 248.0°F)


0.1°C (0.1°F)


±0.4°C (±0.8°F) (excluding probe error)

Additional Specifications

pH probe

HI12923 refillable pH electrode with conical tip, internal temperature sensor, quick connect DIN connector and 1 m (3.3’ cable)

Slope Calibration

from 80 to 110%

Log on Demand

Up to 200 samples (100 pH, 100 mV)

PC Connection

opto-isolated USB with HI92000 software and micro USB cable

Input Impedence

10¹² Ω

Battery Type

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


0 to 50°C (32 to 122°F); RH 100% IP67


185 x 93 x 35.2 mm (7.3 x 3.6 x 1.4”) / 400 g (14.2 oz.)

Ordering information

HI98168 is supplied with HI12923 glass body pH electrode, HI7004M pH 4.01 buffer solution (230 mL), HI7007M pH 7.01 buffer solution (230 mL), HI7051M soil sample preparation solution (230 ml), HI700663 electrode cleaning solution for soil deposits sachet (1), HI700664 electrode cleaning solution for humus deposits sachet (1), HI 721319 ground auger (1), 100 mL plastic beaker (2), 1.5V AA batteries (4), HI92000 PC software, HI920015 micro USB cable, instruction manual with quick start guide, instrument quality certificate and HI720161 hard carrying case.

Additional Informations

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