Hanna HI98131 GroLine | Waterproof pH, EC, TDS & Temperature Hydroponic Tester

In hydroponics, the wrong pH or nutrient strength can affect how well plants use available nutrients. Regularly checking both values matters, but using separate meters makes routine monitoring less convenient. The Hanna HI98131 GroLine Combo Tester gives growers pH, EC, TDS and temperature in one waterproof pocket tester.

We recommend it for nutrient solutions with conductivity up to 6.00 mS/cm. You can measure TDS using either a 0.5 or 0.7 conversion factor, while automatic temperature compensation adjusts readings as solution temperature changes. Hanna Quick Cal solution can calibrate pH and EC together, helping simplify regular maintenance. A graphite EC probe handles nutrient salts well, and the replaceable HI73127 pH electrode extends tester life.

Growing Tip: Let the nutrient solution circulate before testing so the sample represents the full reservoir. Buy Hanna HI98131 GroLine from Kamadi Pakistan for easy hydroponic nutrient monitoring.

Hydroponic Tester Selection Guide

If you mainly test hydroponic or greenhouse nutrient solutions, we recommend HI98131. Its 6.00 mS/cm EC range and Quick Cal option make it more application-focused than a general-purpose water tester.

Key Features

• Designed for hydroponic nutrient testing
  
• Measures pH, EC, TDS and temperature
  
• Conductivity range up to 6.00 mS/cm
  
• Quick Cal for simplified pH and EC calibration
  
• Waterproof body with replaceable pH electrode
  

Technical Specifications

• Model: HI98131
  
• pH Range: 0.00–14.00 pH
  
• pH Resolution / Accuracy: 0.01 pH / ±0.1 pH
  
• EC Range: 0.00–6.00 mS/cm
  
• EC Resolution / Accuracy: 0.01 mS/cm / ±2% FS
  
• TDS Range: 0–3000 ppm (500 CF) / 0–3999 ppm (700 CF)
  
• TDS Resolution: 10 ppm
  
• Temperature Range: 0.0–60.0°C
  
• EC Calibration: 1.41 or 5.00 mS/cm / Quick Cal
  
• pH Electrode: HI73127, replaceable

Applications

• Hydroponic growing systems
  
• Greenhouse fertigation
  
• Aquaponics
  
• Horticulture
  
• Nutrient-solution preparation