GroStar GS1 pH Pen

A lab-grade tool designed specifically for horticulture, this easy-to-use pen allows you to quickly measure and calibrate pH. Premium probe technologies and materials ensure high accuracy and durability with minimal maintenance.

Details:

• Sensitive pH lithium glass membrane with sensor shield for accuracy and durability
  
• Replaceable probe
• Powered by (4) AAA batteries with auto off function
• Automatic temperature compensation
• Manufacturers warranty available (2-year warranty on pen, 1-year warranty on probe)
• pH 4.00/7.00 Calibration Solutions included, 50 ml each
• KCL Storage Solution included, 10 ml