GroStar GS4 pH/EC/500ppm/700ppm/Temp (5-in-1) Combo Pen veg-and-bloom Device Control: Manage up to

Device Control: Manage up to 240 solenoids

Sturdy Construction: Built to last

Golden Lupine

This grow bag also prevents heat build-up

Packing: 100 units per case

GroStar GS4 pH/EC/500ppm/700ppm/Temp (5-in-1) Combo Pen veg-and-bloom Device Control: Manage up toDescription Product Details: AI21040 GroStar GS4 pH EC 500ppm 700ppm and Temp (5 in 1) Combo Pen Lab grade instruments designed specifically for growers! Includes: 2 year warranty (instrument) 1 year warranty (probe) pH 7 and 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