Hanna GroLine HI9814 Waterproof Portable pH EC TDS Meter - Professional Hydroponics Testing
The Hanna GroLine HI9814 is one of the best meters for hydroponics, trusted by commercial and home growers worldwide. This waterproof portable meter delivers fast, accurate measurements of pH, EC/TDS, and temperature with a specialized 3-in-1 pre-amplified probe—making nutrient management simple, reliable, and hassle-free.
Complete Testing Solution - Ready Out of the Box
The HI9814 arrives with everything you need for successful testing: meter, HI1285-7 multiparameter probe, Quick Cal calibration sachets, agriculture cleaning solution, and batteries. Whether you're a commercial operation or at-home grower, verify nutrient results on the spot and start optimizing for larger yields immediately.
Key Benefits
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3-in-1 Measurement: Test pH, EC/TDS, and temperature simultaneously with one device
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IP67 Waterproof: Fully waterproof casing withstands demanding grow environments
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Pre-Amplified Probe: Reduces interference from pumps, motors, and grow lights
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Quick Cal System: Fast single-point calibration for pH and EC using one solution
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Portable Design: Handheld size for easy movement around grow rooms and greenhouses
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Professional Accuracy: ±0.02 pH and ±2% F.S. EC accuracy
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Long Battery Life: 600 hours continuous use on 3 AAA batteries
Technical Specifications
pH Measurement
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Range: -2.00 to 16.00 pH
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Resolution: 0.01 pH
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Accuracy: ±0.02 pH @ 25°C
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Calibration: Automatic 1 or 2-point (4.01, 7.01, 10.01 pH) or Quick Cal
EC/TDS Measurement
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EC Range: 0.00 to 6.00 mS/cm
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EC Resolution: 0.01 mS/cm
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EC Accuracy: ±2% F.S. @ 25°C
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TDS Range: 0-3000 ppm (0.5 CF) / 0-3990 ppm (0.7 CF)
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TDS Resolution: 10 ppm (mg/L)
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Conversion Factor: Selectable 0.5 (500 ppm) or 0.7 (700 ppm)
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Calibration: Automatic 1-point at 1.41 or 5.00 mS/cm or Quick Cal
Temperature Measurement
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Range: -5.0 to 105.0°C / 23.0 to 221.0°F
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Resolution: 0.1°C / 0.1°F
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Accuracy: ±0.5°C / ±1.0°F @ 25°C
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Compensation: Automatic for pH and EC (β=1.9%/°C)
Professional Features
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Large LCD Display: Easy-to-read screen shows all three measurements simultaneously
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Simple Operation: Two-button design for intuitive use
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Quick DIN Connector: Easy probe attachment and removal
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Auto Shut-Off: User-selectable (8 min, 60 min, or disabled) to conserve battery
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Low Battery Indicator: Blinking alert when battery drops below 10%
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mV Mode: ±825 mV range with 1 mV resolution for ORP measurements
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IP67 Waterproof Rating: Fully protected against dust and water immersion
HI1285-7 Pre-Amplified Multiparameter Probe
The included HI1285-7 probe combines a pH electrode, EC/TDS sensor, and temperature sensor in a durable polypropylene body. The built-in amplifier significantly reduces electrical interference from common grow room equipment—pumps, motors, and ballasts—ensuring stable, accurate readings in challenging environments.
Why Choose the GroLine HI9814?
Specially designed for hydroponic, aquaponic, and greenhouse nutrient solutions, the HI9814 is a customer favorite among growers who demand reliability and accuracy. The waterproof construction, portable design, and comprehensive testing capabilities make it ideal for both commercial operations and serious hobbyists. Durable, reliable, and built to withstand the demands of professional growing environments.
Complete Specifications Table
| Specification |
Detail |
| Model |
HI9814 |
| pH Range |
-2.00 to 16.00 pH |
| pH Resolution |
0.01 pH |
| pH Accuracy (@25°C) |
±0.02 pH |
| pH Calibration |
Automatic 1 or 2-point (4.01, 7.01, 10.01 pH) or Quick Cal |
| mV Range |
±825 mV (pH-mV) |
| mV Resolution |
1 mV |
| mV Accuracy |
±1 mV |
| EC Range |
0.00 to 6.00 mS/cm |
| EC Resolution |
0.01 mS/cm |
| EC Accuracy (@25°C) |
±2% F.S. |
| EC Calibration |
Automatic 1-point (1.41 or 5.00 mS/cm) or Quick Cal |
| TDS Range |
0-3000 ppm (0.5 CF) / 0-3990 ppm (0.7 CF) |
| TDS Resolution |
10 ppm (mg/L) |
| TDS Accuracy (@25°C) |
±2% F.S. |
| TDS Conversion Factor |
Selectable 0.5 (500 ppm) or 0.7 (700 ppm) |
| Temperature Range |
-5.0 to 105.0°C / 23.0 to 221.0°F |
| Temperature Resolution |
0.1°C / 0.1°F |
| Temperature Accuracy (@25°C) |
±0.5°C / ±1.0°F |
| Temperature Compensation |
pH: Automatic; EC: Automatic (β=1.9%/°C) |
| Power Supply |
3 x 1.5V AAA batteries (included) |
| Battery Life |
Approx. 600 hours continuous use |
| Auto Shut-Off |
User selectable: 8 min, 60 min, or disabled |
| Operating Environment |
0 to 50°C (32 to 122°F); RH max 100% |
| Protection Rating |
IP67 Waterproof |
| Dimensions |
154 x 63 x 30 mm (6.1 x 2.5 x 1.2") |
| Weight |
196 g (6.91 oz) |
| Warranty |
2 years (meter); 6 months (probe) |
What's Included
- GroLine HI9814 portable pH/EC/TDS meter
- HI1285-7 pH/EC/TDS multiparameter probe with built-in temperature sensor, DIN connector, and 1m (3.3') cable
- HI50036 Quick Calibration Solution sachets (3)
- HI700661 Agriculture Cleaning Solution sachets (3)
- 3 x 1.5V AAA alkaline batteries
- Instrument Quality Certificate
- Electrode Quality Certificate
- Instruction manual
Video Tutorial
Manufacturer: Hanna Instruments (GroLine Series)
Country of Origin: Romania
UPC: 080000098146
SKU: HI9814
