Bluelab Replacement pH Probe

Dependable double-junction pH probe technology that's built to last
 
Double-junction probe reduces reference contamination, extending longevity  
Fully waterproof - not just water resistant
BNC connector allows use with all other compatible Bluelab and Autogrow products 
2-metre cable for measuring in hard-to-reach locations 
Use the included storage cap with KCl to lengthen probe’s lifespan 
Fast sensor response ensures quick and accurate measurements  
Polycarbonate housing for long-lasting strength  
Effective in solutions of 0.2 EC and above