Apera Instruments GroStar GS3 EC Pen Mylar & Reflective Coverings Three square air inlets at

Three square air inlets at bottom

Optimal microclimate on crop level

and Magnesium Nitrate

This facilitates a free-flowing air current that saves you from unneeded fan speed increases and higher energy costs

It features a reinforced ribbed design to stand up to the rigors of commercial growing

Apera Instruments GroStar GS3 EC Pen Mylar & Reflective Coverings Three square air inlets atLab grade instruments designed specifically for growers! The GS3 EC Pen includes: 2. 77 EC calibration solution (50 ml bottle) Measures conductivity EC, PPM (500), PPM (700) and temperature Premium probe technologies and materials ensure high accuracy and durability with minimal maintenance Titanium alloy sensor designed for high accuracy EC measurement Easy to use design and fast calibration adjustment Large 3 color backlit screen gives you clear