pH Tester Groline HI98115

In stock

The HI98115 is a GroLine pH tester with advanced features for the measurement of pH in hydroponic nutrient solutions. The HI98115 is a very simple meter to operate with all functions including turning on/off and calibration are performed with a single button. The HI98115 features a replaceable HI1271 pH electrode that can be changed when needed without having to buy a new meter. The HI98115 is supplied complete with a carrying case and calibration solutions.



The HI98115 GroLine pH tester has been designed with many advanced features for growers of all types. This pH tester offers automatic calibration to one or two points, automatic buffer recognition, calibrated buffer tags, stability indicator, low battery indicator, and selectable automatic shut-off. With its compact size, one-button operation, and ease of calibration, the HI98115 is the optimal tool for pH measurement in nutrient solutions and soil slurries.


Features at-a-glance


Replaceable pH Electrode

The HI1271 supplied gel filled pH electrode is 103 mm long and tapers to an 8 mm diameter at the sensing end. This narrow electrode easily fits into test tubes, vials, and other containers with small opening.


The HI98115 is a full-featured pH tester at a price that anyone that needs to measure pH can afford.

 High accuracy

The HI98115 GroLine pH tester features ±0.2 pH accuracy with 0.01 resolution.

Large LCD Enhanced

LCD that displays reading, stability indicator, low battery indicator and calibration tags.

Automatic Calibration

HI98115 is calibrated automatically to one or two points. The calibration buffers are automatically recognized and after calibration the buffer values used are shown on the display as a tag.

Stability Indicator

An hourglass indicator is displayed on the LCD until a stable reading is obtained. Once a reading stabilized the indicator disappears and a reading can be recorded.

Automatic Shut-Off

The meter can be set to automatically turn off after 8 minutes or 60 minutes to conserve battery life in the event that the meter is left on. The auto off feature can be disabled.




pH Range

0.00 to 14.00 pH


0.01 pH


±0.2 pH


automatic, one or two-point


HI1271 (included)

Battery Type

CR2032 Li-ion / approximately 1000 hours of continuous use


8 minutes, 60 minutes, or can be disabled


0 to 50°C (32 to 122°F); RH 95% max


50 x174 x 21 mm (2 x 6.8 x 0.9“)


50 g (1.8 oz)

Ordering information

HI98115 is supplied with HI1271 pH electrode, pH 4.01 buffer solution sachet (2), pH 7.01 buffer solution sachet (2), electrode cleaning solution sachet (2), battery, quality certificate, and instruction manual in a carrying case.