HANNA GroLine Hydroponic Waterproof Pocket pH/EC/TDS/Temperature Tester
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Simplify Hydroponic Testing with a 4-in-1 Solution
The HI98131 GroLine Waterproof Pocket Tester combines pH, EC, TDS, and temperature measurements in one portable device. With its slim, lightweight design and waterproof build, this tester is perfect for hydroponics, greenhouses, and agricultural use. Easy calibration, precise readings, and a user-friendly interface make it an essential tool for growers seeking consistent and reliable results.
- Features & Benefits
- Product Specifications
- What is included?
- Warranty Policy
HANNA GroLine Hydroponic Waterproof Pocket pH/EC/TDS/Temperature Tester
Engineered for efficiency, the HI98131 delivers reliable measurements in any growing environment. Its Quick Cal function, selectable conversion factors, and replaceable electrode ensure accuracy while saving time and simplifying maintenance.
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Measures pH, EC, TDS, and temperature simultaneously. -
Single-step calibration for pH and EC.
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Extend the life of your device easily.
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Choose 0.5 or 0.7 factor for ppm readings.
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Ideal for humid greenhouse conditions.
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Conserves energy with alerts for low battery.
Reliable Results in Any Setting
Designed for growers who demand accuracy and durability, the HI98131 ensures your nutrient solutions are perfectly balanced. Its compact, rugged design and intuitive controls make it a trusted companion for professional growers and hobbyists alike, reducing guesswork and improving crop health.
Why HANNA GroLine?
HANNA Instruments delivers precision, durability, and reliability trusted by professionals worldwide. Their rugged, waterproof meters provide accurate, consistent readings in any environment, from agriculture to environmental testing. With easy calibration, replaceable probes, and long battery life, HANNA offers long-term value and portability, ensuring dependable results and confidence in every measurement.
Why Buy From Us?
At GreenThumbDepot, you're not just another sale to a faceless corporation. You're partnering with a team genuinely invested in your success. Our legendary customer service, combined with a promise of unbeatable prices, sets us apart. We're here for you, always.
If I could rate 6 stars I would! My representative Edouard B. has been shockingly responsive! Like - oh my god - an actual SERVICE oriented company. He's dug into my odd connectivity issues I've been having - and following up in an AMAZINGLY timey manner. No shit. You'll be impressed! (And the price was also unbeatable, quick shipping...it's all PERFECT). Thank you Ed!!
Customer service was outstanding great people to deal with they understand your needs and they will do their best to fulfill them there is no way I can complain about them because they are the best help out there.Thanks green thumb depot. I'll definitely order from them again
The machine is doing just what my salesman told it would do (I appreciate you Ed thank you) . The machine is what we need for our new business we're starting up, soon to be llc and licensed. We are getting a lot of clients wanting our services. Ed I will be needing more of your products, thank you again.
Great prices, fantastic customer service, and mind blowing shipping! Incredible. Will be using again and telling anyone in need.
FAQ Section
Specifications 
| HANNA GroLine Hydroponic Waterproof Pocket pH/EC/TDS/Temperature Tester | |
|---|---|
| Product Name | HI98131 GroLine Waterproof Pocket Tester |
| SKU | HI98131 |
| pH Range | 0.00 to 14.00 pH |
| pH Accuracy | ±0.10 pH |
| Temperature Range | 0.0 to 60.0 °C (32.0 to 140.0 °F) |
| EC Range | 0.00 to 6.00 mS/cm |
| TDS Range | 0 to 3000 ppm (0.5 CF), 0 to 3999 ppm (0.7 CF) |
| Selectable Conversion Factors | 0.5 or 0.7 |
| Power Supply | 1.5V batteries (4 pcs.) |
| Battery Life | Approximately 100 hours of continuous use |
| Dimensions | 163 x 40 x 26 mm (6.4 x 1.6 x 1.0 in.) |
| Weight | 95 g (3.4 oz) |
What is included?
It includes:
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HI98131 GroLine Waterproof Pocket Tester
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HI73127 Replaceable pH Electrode
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HI73128 Electrode Removal Tool
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Set of 4 Batteries
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Instructions Manual
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Quality Certificate
Warranty Policy
Please check out the manufcaturers website for Warranty related issues.
