HI98118 GroLine Waterproof Hydroponic pH Tester

HI98118 GroLine Waterproof Hydroponic pH Tester

Buy now GroLine Waterproof Hydroponic pH Tester The GroLine HI98118 pH/temperature tester is our latest pocket meter for measuring the pH of a hydroponic nutrient solution. This modern looking meter is only 0.7″ thick and extremely ergonomic, fitting comfortably...
HI98115 GroLine Hydroponics pH Tester

HI98115 GroLine Hydroponics pH Tester

Buy now GroLine Hydroponics pH Tester The GroLine HI98118 pH/temperature tester is our latest pocket meter for measuring the pH of a hydroponic nutrient solution. This modern looking meter is only 0.7″ thick and extremely ergonomic, fitting comfortably in your...
HI98331 Soil Test™ Direct Soil EC Tester

HI98331 Soil Test™ Direct Soil EC Tester

Buy now Soil Test™ Direct Soil EC Tester  The Soil Test™ Direct Soil EC Tester – HI98331 is a rugged and reliable pocket-sized tester that offers quick and accurate readings. The Soil Test™ Direct Soil EC Tester – HI98331 features a stainless steel...
GroLine Waterproof EC tester (ppm) – HI98318

GroLine Waterproof EC tester (ppm) – HI98318

Buy now EC tester for hydroponics  The GroLine Waterproof EC/TDS Tester is made specifically for hydroponics, provides a simple, inexpensive solution to measure fertilizer concentration in a nutrient solution. The HI98318 EC/TDS tester has a graphite sensor that...