Bluelab PROBPH pH Probe for Water, Replacement Electrode for Meter, Monitor, and Controller with Easy Calibration, Tool for Hydroponic System and Indoor Plant Grow

Easy to clean because of its bullet shaped glass bulb. Fully waterproof and less fragile than all-glass electrodes because of its tough polypropylene barrel. Gel filled (non-refillable) making it maintenance free and a double junction reference providing longer life. See more

Measures pH in nutrient solution (acid or alkaline) for precise up and down adjustment and is used with meters uses include growing tent, reservoir, water tank, and hydroponics,2 meter / 6.56 foot standard cable, easy calibration, fully waterproof including cable joint, easy to clean and maintain,Double junction probe has a longer lifespan compared to standard probes due to less contamination and is more accurate and reliable than comparable pens, test strips, drops, and more,Combine with Bluelab tester, meter and other controllers for full garden nutrinets monitoring in water and soil KIT INCLUDES: Cable, probe holder, storage cap, BNC connector, probe care kit is sold separately,Supplied by Bluelab, the industry leader in hydroponic testing equipment, built for growers 6-Month Limited with proof of purchase