Hanna Primo Digital TDS Meter

Hanna Instruments Primo TDS Meter Customers who want to ensure the purity of the water produced by their RO water filtration system will enjoy the ease-of-use afforded them by the Primo TDS Tester. This microprocessor-powered instrument provides Total...

HM Digital TDS meter TDS-3

Ideal for commercial use, the TDS-3 includes a carrying case with belt clip. It is highly efficent and accurate due to its advanced microprocessor technology. It features a measurment range of 0-9990 ppm. From 0-999 ppm, the resolution is in increments...

Bluelab PPM Pen

Bluelab ppm Pen Measures conductivity and temperature and is a great way to ensure plants are receiving the proper amounts of nutrients. This pen features a backlit LCD display, optional calibration and a successful calibration indicator, a...

Bluelab Truncheon Meter

Bluelab Truncheon Meter Gardeners can easily measure and maintain nutrient strength levels with the waterproof Truncheon Meter. Truncheon Meter reads in EC (0.2-3.6), CF (2-36), TDS/ppm 500 (100-1800) and ppm 700 (140-2520). Accurate within ±...

Hanna GroLine EC/TDS Pen

The Hanna GroLine EC/TDS Pen HI98318 is a pocket meter for measuring the EC/TDS of a hydroponic nutrient solution.   This modern looking meter is only 0.7" thick and extremely ergonomic, fitting comfortably in your hand. The HI98318 has a...

HM Digital TDS meter COM80

Measures EC (μS, mS), TDS (ppm, ppt) and temperature in ºC/ºF. Features a durable, water-resistant housing, automatic temperature compensation, hold button, auto shut-off, digital (push button) calibration, low battery indicator, and a...

Bluelab Pulse Multimedia EC/MC Meter

Bluelab Pulse Multimedia EC/MC Meter Bluelab® Pulse Multimedia EC/MC Meter is a new innovation that connects directly to your mobile device. Quickly spot check, correct, achieve better yield and grow healthier plants across a wide range of growing...

Hanna GroLine pH/EC/TDS Combo Pen

Hanna GroLine pH/EC/TDS Combo Pen   Designed to bring simplicity to nutrient testing, the HI9814 Portable GroLine Meter is designed specifically for Hydroponic growers. The specialized electrode combines 3 sensors in a single rugged probe...

Hanna GrowLine Direct Soil EC/Temp Tester

The Hanna GrowLine Direct Soil EC/Temp Tester HI98331 Soil Test™ is a pocket tester specifically designed to directly measure soil conductivity (EC) and temperature.  With a compact size, single-button operation, and automatic...