Hanna Instruments-99300 EC/TDS/Temperature Meter
The HI-99300 is a portable, EC/TDS/temperature meter that measures low range conductivity in µS/cm and TDS in ppm. It is housed in a case rated for IP67 conditions.
This instrument offers single point, automatic calibration with automatically temperature compensated measurements. The compensation coefficient and EC/TDS conversion factor are user-selectable from 0.45 to 1.00 and temperature coefficient is selectable from 0.0 to 2.4%/°C.
The meter easily fits in the palm of your hand and the bottom probe connection ensures the electrode cable doesn't get in your way. The large, multi-level LCD displays the primary reading, temperature and calibration guides simultaneously. Symbols and messages on the LCD indicate meter status and guides users through operations.
At start-up, the meter shows the remaining battery percentage and when a low battery condition is detected, a battery symbol appears on the LCD to advise the user that only a few hours of working time is left.
The HI-76306 EC/TDS/temperature probe resists clogging and is easy to clean.
Ideal for
- Pure Water
- Tap Water
Main benefits
- BEPS (Battery Error Prevention System) alerts the user in the event that low battery power could adversely affect readings
- Battery % displayed on start-up
- Compact, heavy-duty and water resistant
Key features
- Amperometric probe technology
- Automatic Temperature Compensation
- Automatic single calibration with calibration indicator
- On-screen tutorial messages for calibration and set-up
- Replacement probe - HI-763063
| Range - EC | 0 to 3999 µS/cm | |
| Range - TDS | 0 to 2000 ppm (mg/L) | |
| Range - Temperature | 0.0 to 60.0°C / 32.0 to 140.0°F | |
| Resolution - EC | 1 µS/cm | |
| Resolution - TDS | 1 ppm (mg/L) | |
| Resolution - Temperature | 0.1°C / 0.1°F | |
| Accuracy - EC | ±2% F.S. | |
| Accuracy - TDS | ±2% F.S. | |
| Accuracy - Temperature | ±0.5°C / ±1°F | |
| TDS Factor | adjustable, from 0.45 to 1.00 with 0.01 increments | |
| Calibration | automatic, 1 point at 1382 ppm (CONV 0.5) or at 1500 ppm (CONV 0.7) or at 1413 µS/cm (others) |
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| Temperature Compensation | Automatic, 0 to 60°C (32 to 140°F) with ß adjustable from 0.0 to 2.4% with 0.1% increments |
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| Probe | HI 763063, EC/TDS/temperature sensor, with DIN connector, 1 m (3.3') cable (included) |
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| Battery Type / Life | 4 x 1.5V AAA / approx. 500 hours of continuous use | |
| Environment | 0 to 50°C (32 to 122°F); RH max 100% | |
| Dimensions | 154 x 63 x 30 mm | |
| Weight | 196g |
Frequently Asked Questions
Clear answers to help you choose the right water testing solution with confidence
Which brands of water testing kits do you supply?
Do you provide kits for both home and professional use?
Yes — whether you’re a pool or spa owner, aquarium keeper, utility company, or a university laboratory, we have the right solution for your needs.
Can I arrange servicing or calibration for my photometer?
Absolutely. We also provide servicing and calibration to keep your photometers accurate and reliable.
How quickly do you dispatch orders?
Orders placed before 2:30 pm (Monday–Friday) are dispatched the same day. We also ship on Saturdays for your convenience.
Which couriers do you use for delivery?
We deliver through UPS, DPD, and Royal Mail. You can also choose to upgrade to next-day delivery at checkout.
What is your return policy?
We accept returns within 14 days of delivery provided the items are unused, in their original packaging, and in resalable condition. Please contact our team before returning any items.
Can I place bulk or business orders?
Yes, we welcome bulk, trade, and institutional orders. For tailored pricing or large quantities, please get in touch with us directly.
How can I get help if I’m unsure which kit to buy?
You can call us at 📞 +44 (0)115888 2726 and our team will guide you in choosing the most suitable kit for your needs.