The GroLine HI98118 pH/temperature tester measures the pH of a hydroponic nutrient solution, essential to maximize optimum growth. The table below lists the ideal pH range for a variety of plants. The HI98118 can also measure the pH in soil slurries or soils and nutrient solutions using the Pour Through Sampling Methodfor container plants, where leachate is collected from a thoroughly watered plant for testing.

Two-Button Operation
Quick Calibration Mode using Hanna Quick Cal pH/EC Calibration Solution
Extractable Cloth Junction to Extend pH Electrode Life

SKU	HI98118
Name	GroLine Waterproof pH Tester with 0.01 Resolution – HI98118
pH Range	0.00 to 14.00 pH
pH Resolution	0.01
pH Accuracy	±0.2 pH
pH Calibration	automatic, one or two-points (pH 4.01, 7.01, 10.01); one-point calibration using HI5036 or HI50036P Quick Cal calibration solution
pH Temperature Compensation	automatic, 0 to 50°C (32 to 122°F)
Temperature Range	0.0 to 50.0°C/32.0 to 122.0°F
Temperature Resolution	0.1°C/0.1°F
Temperature Accuracy	±0.5°C/±1°F
Automatic Shut-Off	8 minutes, 60 minutes, or can be disabled
Battery Type/Life	CR2032 Li-ion / approximately 1000 hours of continuous use
Environment	0 to 50°C (32 to 122°F); RH 100% max

Features - GroLine Waterproof pH Tester - HI98118

Automatic Temperature Compensation (ATC), displays temperature in ℃ or ℉
Renewable junction to clear any clogging that causes readings to drift and be erratic
Waterproof and designed to float if dropped in water
Automatic calibration to one or two points
Uses Hanna’s Quick Cal pH/EC standard with a pH value of 6.86 that can also be used to calibrate conductivity meters to 5, 000 µS/cm
Automatic shut-off with three user controlled settings
Large LCD displays stability indicator, low-battery indicator, and calibration tags