GroStar GS1 pH Pen

Lab grade instruments designed specifically for growers!

Includes: 
• 2-year warranty (instrument)
• 1-year warranty (probe)
• pH 7 & pH4 calibration solution (50ml bottle each)
• KCL storage solution (10ml bottle)
• Lanyard and user manual

Features:
• Measures pH and temperature
• Premium probe technologies and materials ensure high accuracy and durability with minimal maintenance
• Easy-to-use design and fast calibration adjustment
• Double junction replaceable probe, so you don’t have to discard the entire pen when the probe reaches its end of life
• Large 3-color backlit screen gives you clear information
• IP67 waterproof rating
• Powered by AAA batteries with auto off function
• Automatic temperature compensation