The Hanna HI73127 is a replacement pH electrode cartridge that extends the life of your Hanna combo tester — no need to replace the whole meter when the pH sensor is exhausted.

Key features

• Easy-fit cartridge locks into place with two O-rings for a watertight seal — no pins to line up or break
• Extendable cloth junction improves response time and prolongs electrode life
• Single-junction Ag/AgCl reference, gel electrolyte, 0–14 pH range, polypropylene body

Compatible with: Hanna HI98129 and HI98130 combo pH/EC/TDS testers (also HI98121, HI98127, HI98128). Use with the HI73128 removal tool. What's included: 1 replacement pH electrode cartridge. Recalibrate after installing.

See compatible testers in our Hanna WQ Meters collection.

Estimated shipping weight: 0.3 lb.