Apera GroStar GS4 pH/EC Combo Pen

AI21040 - GroStar GS4 pH/EC/500ppm/700ppm & Temp (5-in-1) Combo 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) • 2.77 EC calibration solution (50ml bottle) • KCL storage solution (10ml bottle) • Lanyard and user manual Features: • Measures pH, conductivity (EC and 500ppm/700ppm) and temperature (5-in-1) • Compatible with all GroStar replacement probes: pH, Soil pH, EC and PH/EC Combo • 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 • Durable structure, IP67 waterproof rating • Powered by AAA batteries with auto off function • Automatic temperature compensation