Standard combination pH probe with a non-refillable gel reference and built-in temperature sensor. Contains fixed cable with 5-pin circular connector compatible with Hach sensION meters.

Accurate
Low

Accurate

You don't just need an answer, but the right one, and fast.

Low maintenance

Gel electrolyte eliminates the daily need to monitor and refill the electrolyte solution.

Easy to Use

Now, more than ever, you're looking for new ways to stretch your dollar and resources. Skip studying complicated user manuals and spend your time measuring, thanks to Hach's innovative menu designs and simple keypads for truly intuitive operation.

Rugged and Durable

Rely on Hach's durable measuring systems designed to withstand the rigors of outdoor testing and frequent use. Choose from the industry's toughest probes or non-glass electrodes for rugged, waterproof systems that deliver day after day.

Flexible

Need to measure in both the lab and field? Hach offers efficiency with reliable, high-performance systems that easily move with you from the benchtop directly to the testing site. Measure the parameters you need today with the assurance you can expand them tomorrow.