Hanna Instruments HI98318 GroLine Waterproof EC/TDS (ppm) Tester lab-services One (1) outlet with 15

One (1) outlet with 15 minute intervals

The steel-wire spiral structure is flexible and easy to install in hard-to-reach places

dry concentrate nutrients

Kills insects on vegetables berries citrus grapes nuts and ornamentals

General Hydroponics FloraGro 2-1-6 delivers nutrients for structural and foliar growth

Hanna Instruments HI98318 GroLine Waterproof EC/TDS (ppm) Tester lab-services One (1) outlet with 15The 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 reduces the polarization effect common with amperometric testers that use two stainless steel pins. Automatic calibration is achieved easily. Simply submerge the sensor in calibration solution and the meter will automatically