GroStar GS4-E replacement pH/EC combo electrode

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.