Understand Your Nutrient Solution
Measuring different aspects of your growing medium can tell you exactly what your plants need and what they are missing. Ensure the perfect nutrient balance for a better yield with pH and conductivity testers.
Direct Soil Conductivity Tester
Specifically designed to directly measure soil conductivity (EC) and temperature with steel penetration electrode.
GroLine Combo Tester
The HI98131 Hydroponic Waterproof Pocket Meter is a slim, lightweight meter that measures pH, conductivity (EC), total dissolved solids (TDS) and temperature.
GroLine Waterproof Combo Meter
One combined, pre-amplified pH, EC, and TDS (ppm) probe for hassle-free measurements. Get the HI9814K Kit, complete with everything you need for better testing.
Simple. Original. Smart.
HALO® Wireless Soil pH Meter
Upgrade to a wireless pH testing experience for better quality.
Our HALO® Wireless Soil pH Meter features a triple ceramic junction in the outer reference cell, built-in temperature sensor, and the conic pH sensing tip making it ideal for pH measurements in soil samples. Take direct pH and temperature measurements using your smartphone or tablet.
Maintain the perfect conditions for your plants.
Measure from 0.0 to 100.0 % relative humidity (RH) anywhere in your facility with this portable thermohygrometer.
- Simultaneous RH and temperature measurements
- Smart probe tracks the probe's performance and stores calibration history
- 250-hour battery life
Nutrient Analysis Photometer
Measure essential nutrients in your fertilizer enriched solutions right on the spot.
Features an innovative optical design to ensure consistency between measurements.
To save valuable laboratory benchtop space, the HI83303 doubles as a professional pH meter with its digital pH/temperature electrode input.
The HI83325 is designed for the agriculture industry to measure nutrients including ammonia, nitrate, and phosphorus.
Monitor like a scientist. Grow like a professional.
24-hour continuous pH, EC/TDS, and temperature monitoring of your nutrient solution.
Our GroLine Monitor is made by growers and scientists alike who are committed to helping you take your growing operation to the next level. Choose the GroLine Monitor that works best for your testing environment: