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 featuring a polypropylene body, integrated temperature sensor, and cloth junction.

• One combined, pre-amplified pH, EC, and TDS (ppm) probe for hassle-free measurements.
• Quick CAL mode for a speedy, single-point calibration for pH and EC with one solution.
• Designed for hydroponic, aquaponic, and greenhouse growers.

The HI98131 is a slim, lightweight, and waterproof pocket tester that measures pH, conductivity (EC), TDS (ppm), and temperature. Simple, two-button meter operation and advanced features, including a selectable EC to TDS conversion factor (0.5 – 500 ppm and 0.7 – 700 ppm). for your essential testing.

• All measurements in a single, hassle-free tester.
• Quick Cal solutions to calibrate pH and conductivity all at once with a single solution.
• Perfect for hydroponics, greenhouse, and agriculture use.

HI98318 GroLine EC/TDS meter is supplied with protective cap, (4) HI50036 Quick Cal Calibration Sachets (20 ml), (1) CR2032 battery, instruction manual, and quality certificate.

The HI98318 is our latest 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 very large easy to read LCD display that shows both EC or TDS and temperature along with calibration, stability and low battery indicators. All operations are simplified to two buttons. One is for turning the meter on/off and the other for automatic one point calibration.

• Graphite Sensor for Reduced Polarization Effect
• Two-Button Operation
• Quick Calibration Mode using Hanna pH/EC Quick Cal Solution

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 hand. The HI98118 has a very large easy to read LCD display that shows both pH and temperature along with calibration, stability and low battery indicators. All operations are simplified to two buttons. One is for turning the meter on/off and the other for automatic one or two point calibration.

• Two-Button Operation
• Quick Calibration Mode using Hanna Quick Cal pH/EC Calibration Solution
• Cloth junction providing a larger surface area than a standard ceramic junction