OHAUS ST20 pH Pen Meter | IP67 Waterproof | Portable | Auto Calibration
High-accuracy pH pen meter with IP67 waterproof housing and auto calibration.
The OHAUS ST20 pH Pen Meter delivers reliable pH measurement with enhanced accuracy and rugged waterproof protection. It supports automatic temperature compensation, one-touch calibration, and low battery indication. Perfect for laboratory, educational, and on-site water testing applications.
