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Lightweight Groline Combo Waterproof Ph/ec/tds/temperature Tester In Multiple Colors [54IOKUoC]

$34.99 $111.99 -69%

Introducing the GroLine Combo Waterproof pH/EC/TDS/Temp Tester The Hanna Instruments GroLine Waterproof Pocket pH/EC/TDS/Temp Tester is an essential tool for professionals and hobbyists alike, designed to provide accurate and reliable measurements in

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Introducing the GroLine Combo Waterproof pH/EC/TDS/Temp Tester

The Hanna Instruments GroLine Waterproof Pocket pH/EC/TDS/Temp Tester is an essential tool for professionals and hobbyists alike, designed to provide accurate and reliable measurements in various environments. This versatile pocket tester is slim, lightweight, and waterproof, making it perfect for use in hydroponics, greenhouses, and agricultural settings. With its advanced features and user-friendly design, this tester simplifies the process of monitoring pH, conductivity (EC), Total Dissolved Solids (TDS), and temperature.

Key Features and Specifications

The HI98131 features a large, multi-level LCD that simultaneously displays pH, EC or TDS, and temperature readings, allowing for quick and easy data analysis. The pH readings offer a 0.01 resolution with an accuracy of +/-0.05 pH, while the EC and TDS readings provide a 0.01 mS/cm and 10 ppm (mg/L) resolution, respectively, with a 2% full-scale accuracy. The EC range is from 0.01 to 6.00 mS/cm, and TDS ranges from 0 to 3000 ppm using a 0.5 conversion factor. Additionally, the tester offers an option to use a 0.7 (700 ppm) conversion factor, providing flexibility for different applications. An exposed temperature sensor ensures rapid temperature compensation for EC and TDS readings.

Practical Applications and Benefits

The HI98131 is designed to cater to a wide range of users, from gardeners to agricultural professionals. Its simplified one-button calibration process, along with the option for quick cal pH and EC calibration, ensures ease of use. The replaceable pH electrode, such as the HI73127, features an extractable junction for easy maintenance and troubleshooting. The tester also includes a HOLD button for freezing readings, a BEPS (Battery Error Prevention System) for accurate measurements, and a low battery indicator to prevent unexpected shutdowns. With an auto-off feature, users can conserve battery life by selecting an automatic shut-off time of 8 minutes, 60 minutes, or disabling it altogether. The HI98131 is a reliable, all-in-one solution for maintaining optimal conditions in your hydroponic systems, greenhouses, and agricultural applications.

What Our Customers Say

December 27, 2025

Absolutely no complaints!

This is a very good and a very, very solid product.

- Gwyn Z..

December 27, 2025

Absolutely no complaints!

A very nice product. I really, really, really love it.

- Padrig I..

December 27, 2025

Absolutely no complaints!

This is a truly superb, very, very quality product.

- Carwyn M..

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