Hach Pocket Pro and Pro+ are engineered to deliver accurate results you can be confident in. Reliable performance is ensured with a stabilization lock that helps you take the correct sample, ongoing calibration for select models, and a performance diagnostic for pH. You can go into every testing location trusting the tester is operating at peak performance.

Pocket testers have to be usable in the field which means they should operate when you need them. The Hach Pocket Pro and Pro+ testers are powered by AAA batteries that are quick to replace in the field so you don't get caught without power when you need it.

If you are in the field you are also on the move. And that means you need a clear and easy display to capture accurate readings regardless of the conditions. The Pocket Pro and Pro+ are both designed with a large, easy-to-read LCD screen to ensure you accurately capture readings on the go.