Product Description

Hanna HI-98118 GroLine Waterproof pH Tester with 0.01 Resolution

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 Method for 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

Features Hanna HI-98118 GroLine Waterproof pH Tester

Automatic Temperature Compensation (ATC), displays temperature in °C or °F
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

Optimum pH Levels for Plants

Vegetable Plants	Optimal pH	Garden/Flower Plants	Optimal pH	Orchard Plants	Optimal pH
Artichoke	6.5-7.5	Acacia	6-8	Apple	5-6.5
Asparagus	6-8	Acanthus	6-7	Apricot	6-7
Barley	6-7	Amaranth	6-6.5	Apricot	6-7
Bean	6-7.5	Bougainvillea	5.5-7.5	Cherry	6-7.5
Brussels Sprout	6-7.5	Dahlia	6-7.5	Grapefruit	6-7.5
Corn (Maize)	6-7.5	Erica	4.5-6	Grapevine	6-7
Cucumber	5.5-7.5	Euphorbia	6-7	Lemon	6-7
Early carrot	5.5-7	Fuchsia	5.5-7.5	Nectarine	6-7.5
Early Potato	4.5-6	Gentian	5-7.5	Orange	5-7
Egg Plant	5.5-7	Gladiolus	6-7	Peach	6-7.5
Late carrot	5.5-7	Hellebore	6-7.5	Pear	6-7.5
Late Potato	4.5-6	Hyacinth	6.5-7.5	Plum	6-7.5
Lettuce	6-7	Iris	5-6.5	Pomegranate	5.5-6.5
Melon	5.5-6.5	Juniper	5-6.5	Walnut	6-8
Oat	6-7	Ligustrum	5-7.5
Onion	6-7	Magnolia	5-6
Pea	6-7.5	Narcissus	6-8.5
Pepper	6-7	Oleander	6-7.5
Pumpkin	5.5-7.5	Paulownia	6-8
Rice	5-6.5	Portulaca	5.5-7.5
Soybean	5.5-6.5	Primula	6-7.5
Spinach	6-7.5	Rhododendron	4.5-6
Strawberry	5-7.5	Roses	5.5-7
String Beans	6-7.5	Sedum	6-7.5
Sugar beet	6-7	Sunflower	6-7
Sunflower	6-7.5	Tulip	6-7
Sweet Potato	5.5-6	Viola	5.5-6.5
Tomato	5.5-6.5
Watermelon	5.5-6.5
Wheat	6-7

Specifications Hanna HI-98118 GroLine Waterproof pH Tester


SKU	HI98118
Product Name	GroLine Waterproof pH Tester with 0.01 Resolution – HI98118
Quote Required	Yes
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
Dimensions	160 x 40 x 17 mm (6.3 x 1.6 x 0.7’’)
Weight	75 g (2.6 oz.)
Ordering Information	HI98118 GroLine pH tester, Quick Cal calibration sachets (3), electrode cleaning solution sachet, battery, instruction manual and quality certificate.