A Meter for
Every Grower
Hanna GroLine products are the easiest and most accurate tools available
for managing nutrients. Our combo models test pH, EC/TDS, & temperature
and are calibrated with just one solution. Simple. Fast. Accurate.
Pocket
Tester
HI98131
Portable
Meter
HI9814
Grow better with
hannainst.com/groline
GroLine
Monitor
HI981420