GroStar GS1-E Replacement pH Electrode
This replacement probe for the GroStar GS1 pH Pen allows you to replace your pen's probe and extend the life of your tool. Premium probe technologies and materials ensure high accuracy and durability with minimal maintenance. The electrode's double junction structure uses blue gel electrolyte without air bubble.
- Replacement GS1 probe measures pH and temperature
- Low-resistance lithium glass membrane
- 1-year warranty