Professional Soil pH Meter GroLine - HI98168

In stock
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.

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. 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.




pH Range 

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

pH Resolution 

0.1 pH; 0.01 pH; 0.001 

pH Accuracy 

±0.1 pH; ±0.01 pH; ±0.002 

pH 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°C (-4.0 to 248.0°F) 

mV Range 


mV Resolution 


mV Accuracy 

±0.4 °C / ±0.8 °F 

Relative mV Offset Range 


mV Temperature Range 

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.