Hanna GroLine Waterproof Portable pH/EC/TDS Meter - HI9814

Hanna Instruments GroLine Waterproof Portable pH/EC/TDS Meter HI9814 is a waterproof multiparameter meter for checking pH, EC/TDS, and temperature in hydroponic nutrient solutions. It’s a handheld water testing meter built for quick, on-the-spot monitoring in growing environments.

This waterproof portable pH/EC/TDS meter is made for hydroponic, aquaponic, and greenhouse growers who want a clear view of key solution readings without extra complexity. The large LCD digital screen displays readings simultaneously, keeping pH, EC or TDS, and temperature easy to see at a glance. Simple two-button operation keeps mode changes and calibration straightforward, which is ideal when you’re moving between different tanks, lines, or test points.

HI9814 is supplied with a replaceable pre-amplified multiparameter probe (HI1285-7) that measures pH, EC/TDS (ppm), and temperature. A quick DIN connector supports easy probe attachment and removal, helping keep the meter ready for routine checks. For fast calibration, Quick Cal Mode is built in to support a single-point calibration for pH and EC/TDS with one solution, keeping the workflow efficient when you need consistent checks across a week.

For accuracy across changing conditions, automatic temperature compensation is included for pH and EC, with EC compensation using β=1.9%/°C. The meter also supports a selectable EC to TDS conversion factor, with 0.5 (500 ppm) or 0.7 (700 ppm) options, so TDS readings can match the ppm scale you prefer. Measurement coverage includes a pH range of -2.00 to 16.00 pH with 0.01 pH resolution, plus an EC range of 0.00 to 6.00 mS/cm with 0.01 mS/cm resolution. TDS readings span 0 to 3000 ppm with the 0.5 conversion factor, or 0 to 3990 ppm with the 0.7 conversion factor, with 10 ppm resolution.

The IP67 rated waterproof casing is designed to handle humid growing conditions and everyday handling. This GroLine hydroponics meter is a good fit for growers who want a waterproof portable pH/EC/TDS meter with an all-in-one probe, automatic temperature compensation, and a selectable EC to TDS conversion factor for quick, repeatable nutrient-solution checks.

Indoor; Easy Setup; Accuracy; Multi-System Use; Waterproof.

pH Range: -2.00 - 16.00 pH; pH Accuracy: ±0.02 pH; pH Calibration: 1 / 2 Point; pH Temperature Compensation: ‐5.0 - 105.0 °C; pH CAL Check: Probe Condition Indicator; Sensor pH Check: Yes; mV Range: ±825 mV; mV Resolution: 1 mV; mV Accuracy: ±1 mV; EC Range: 0.00 - 6.00 mS/cm; EC Resolution: 0.01 mS/cm; EC Accuracy: ±2% FS; TDS Range (500 CF): 0 - 3000 ppm; TDS Resolution: 10 ppm mg/L; TDS Accuracy: ±2% FS; EC/TDS Temperature Compensation: Automatic; Temperature Correction Coefficient: β = 1.9%/ °C; EC to TDS Conversion Factor: 0.5 (500 ppm); Temperature Range: ‐5.0 - 105.0 °C; Temperature Resolution: 0.1 °C; Temperature Accuracy: ±0.5 °C; Automatic Shut Off: 8 / 60 Mins; Battery Type: AAA; Battery Life: 600 Hours; Waterproof Rating: IP-67; Sensor Probe Length: 6.1 Inch; Width: 2.5 Inch; Height: 1.2 Inch.