Accurate Electrochemistry Measurement At Your Fingertips

Starter pen meters provide what should be expected of a small, economical pen meter: simple, fast, straightforward, no-frills operation time and time again.

With durable ABS housing, a protective sensor cap, and automatic shutdown feature that preserves battery life, Starter pen meters can endure consistent use in rugged environments.

This is a replacement R10 ST electrode that is compatible with the Ohaus ST10R Starter Series Water ORP Analysis Pen Meter