• GroStar GS4 pH/EC/500ppm/700ppm/Temp (5-in-1) Combo Pen
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Apera Instruments

GroStar GS4 pH/EC/500ppm/700ppm & Temp (5-in-1) Combo Pen

GroStar GS4 pH/EC/500ppm/700ppm & Temp (5-in-1) Combo Pen

$147.95
$147.95
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Apera Instruments GroStar Lab grade instruments designed specifically for growers! The GroStar GS4 pH/EC/500ppm/700ppm & Temp (5-in-1) Combo Pen 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 

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