HANNA HI73120 测试仪备用ORP电极

The HI73120 is a spare ORP electrode, compatible with the HI98120 ORP Tester. Replacing an ORP electrode on the HI98120 ORP Tester is both quick and easy. The spare electrode is designed as an easy-fit cartridge that locks into place, featuring two o-rings to maintain a watertight seal.