Save Money. Grow Your Own!
Fast Plain Box Shipping.
We ship to the US & Canada.
AI58040 - GroStar GS4-E replacement pH/EC combo electrode
Measures pH, conductivity (EC and PPM) and temperature
Combo probe built with lithium glass membrane and titanium alloy to ensure high accuracy and durability
Premium probe technologies and materials ensure high accuracy and durability with minimal maintenance
double junction structure uses blue gel electrolyte without the air bubble
1-year warranty