Hanna pH/ORP/Temperature Combo Tester - HI98121

The HI98121 is a waterproof pH, ORP, and temperature meter designed for reliable performance in various environments. The housing of this tester is completely sealed against humidity and is built to float, ensuring durability and safety during use. Electrode replacement is simplified with a stainless steel round connector, eliminating the risk of bent or broken pins. When the cloth junction becomes clogged and response time slows, it can be restored by pulling it out 3 mm (1/8”) to improve stability and responsiveness. The exposed stainless steel temperature sensor allows for faster and more accurate temperature readings.

Hanna Instruments HI98121 Waterproof pH/ORP/Temperature Combo Tester integrates pH, oxidation-reduction potential (ORP), and temperature measurements into a single portable unit. Engineered for accuracy and long-term use, this tester features a fully sealed, floating housing suitable for laboratory, industrial, and field applications. The replaceable HI73127 pH electrode with a stainless steel round connector ensures easy maintenance, while the extendable cloth junction helps maintain consistent performance in applications such as beverages, wastewater, and environmental monitoring.

It measures pH in the range of -2.00 to 16.00 with 0.01 pH resolution and ±0.05 pH accuracy. ORP measurement range is ±1000 mV with ±2 mV accuracy and 1 mV resolution. Temperature measurement ranges from -5.0 to 60.0°C with 0.1°C resolution and ±0.5°C accuracy. The tester supports automatic two-point pH calibration with multiple buffer options and includes automatic temperature compensation for precise readings.

Powered by 4 x 1.5V batteries, it offers approximately 250 hours of operation and includes an auto shut-off feature after 8 minutes of inactivity. Its compact size of 163 x 40 x 26 mm and lightweight design of 100 g make it ideal for portable use. Built for durability, it performs reliably across laboratory, industrial, water treatment, and environmental conditions.

This tester is ideal for laboratory water analysis, wastewater monitoring, industrial process control, and onsite field measurements. Explore laboratory and water analysis instruments and pH/ORP Tester for accurate and efficient testing solutions.