3-IN-1 WATERPROOF EC, TDS & TEMPERATURE TESTING
The Hanna DiST® 5 (HI98311) is an advanced, waterproof conductivity and TDS tester that delivers quick, accurate measurements in a single pocket-sized device. Measure conductivity (0–3999 µS/cm), TDS (0–2000 ppm), and temperature without switching between multiple meters—perfect for on-the-go testing in hydroponics, aquariums, pools, ponds, and water quality applications.
WHY CHOOSE THE DiST® 5?
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Compact waterproof design – Floats and fits in your pocket for ultimate portability
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Replaceable graphite electrode – Extends tester life for years of reliable use
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3-in-1 convenience – EC, TDS, and temperature in one device
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Ideal for multiple applications – Hydroponics, aquariums, pools, ponds, and general water testing
THE STANDARD IN EC & TDS MEASUREMENT
When Hanna first introduced the original DiST® (Dissolved Solids Tester), conductivity and total dissolved solids measurements became easy and affordable for everyone. The DiST®'s combination of simplicity and value made it the industry standard in EC and TDS measurement. Hanna continues this legacy with the DiST® 5—packed with advanced features while maintaining the ease of use that made the original famous.
ADVANCED FEATURES FOR ACCURATE TESTING
Replaceable Graphite Electrode
The HI73311 graphite conductivity electrode delivers superior accuracy by resisting contamination from salt deposits in your samples. Unlike fixed electrodes, this replaceable design extends the life of your tester for years of dependable measurements.
Adjustable TDS Conversion Ratio
Customize the EC-to-TDS conversion factor (0.45 to 1.00) to match your specific application, ensuring accurate TDS readings for your unique water chemistry.
Automatic Temperature Compensation (ATC)
Built-in ATC with adjustable β (0.0 to 2.4%/°C) automatically corrects EC and TDS readings based on temperature, eliminating manual calculations and ensuring accuracy across varying conditions.
Dual Temperature Display
Switch between °C and °F for convenient temperature measurement in your preferred unit.
Smart Battery Management (BEPS)
The Battery Error Prevention System alerts you when low battery power could affect reading accuracy, preventing unreliable measurements. Get approximately 100 hours of continuous use from four 1.5V batteries (included).
Automatic Calibration
One-point automatic calibration at 1413 µS/cm or 1382 mg/L (ppm) ensures your tester stays accurate with minimal effort.
Waterproof & Floating Design
The IP67-rated waterproof casing protects against water intrusion and the tester floats—so you'll never lose it in a pool, pond, or tank. Built to withstand real-world testing environments.
CONVENIENT OPERATION FEATURES
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HOLD button – Freeze readings on the display for easy recording
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Stability indicator – Know when your reading has stabilized
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Battery level indicator – Monitor power status at a glance
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Automatic shut-off – Powers down after 8 minutes of non-use to conserve battery life
UNMATCHED VERSATILITY
All these professional features are packed into a lightweight, floating, waterproof casing that fits comfortably in your hand or pocket. The DiST® 5 is unmatched for EC, TDS, and temperature measurements in:
- Hydroponic nutrient solutions
- Aquarium water quality monitoring
- Swimming pool and spa maintenance
- Pond water testing
- Drinking water quality checks
- Agricultural irrigation water
- Laboratory and field testing
TECHNICAL SPECIFICATIONS
| Specification |
Detail |
| Model |
HI98311 (DiST® 5) |
| EC Range |
0 to 3999 µS/cm |
| EC Resolution |
1 µS/cm |
| EC Accuracy |
±2% Full Scale |
| EC Calibration |
Automatic, one point at 1413 µS/cm or 1382 mg/L (ppm) |
| TDS Range |
0 to 2000 mg/L (ppm) |
| TDS Resolution |
1 mg/L (ppm) |
| TDS Accuracy |
±2% Full Scale |
| EC/TDS Temperature Compensation |
Automatic, with β adjustable from 0.0 to 2.4%/°C |
| EC to TDS Conversion Factor |
Adjustable from 0.45 to 1.00 |
| Temperature Range |
0.0 to 60.0°C / 32.0 to 140.0°F |
| Temperature Resolution |
0.1°C / 0.1°F |
| Temperature Accuracy |
±0.5°C / ±1°F |
| Probe |
HI73311 replaceable EC/TDS graphite electrode (included) |
| Automatic Shut-Off |
After 8 minutes of non-use |
| Power Supply |
Four 1.5V batteries (included) |
| Battery Life |
Approximately 100 hours of continuous use |
| Operating Environment |
0 to 50°C (32 to 122°F); RH max 100% |
| Protection Rating |
Waterproof and floats |
| Dimensions |
163 × 40 × 26 mm (6.4" × 1.6" × 1.0") |
| Weight |
100 g (3.5 oz) |
| UPC |
793573622341 |
WHAT'S INCLUDED
- HI98311 DiST® 5 EC/TDS/Temperature Tester
- HI73311 replaceable graphite electrode
- Four 1.5V batteries
- Instruction manual
The DiST® 5 continues Hanna's tradition of making professional-grade water testing accessible, affordable, and reliable for everyone from hobbyists to professionals.
