Apera Instruments GroStar GS1 pH Pen Hygrometers & Other Meters Soul Sensei Micro is a

Soul Sensei Micro is a dynamic component of our three-part fertilizer system

You'll be happy to know both versions are crafted from rigorously tested materials

Soaking: (Oasis cubes

your plants get all the nutrients they need

Apera Instruments GroStar GS1 pH Pen Hygrometers & Other Meters Soul Sensei Micro is aLab grade instruments designed specifically for growers! The GS1 pH Pen includes: pH 7 & pH4 calibration solution (50ml bottle each), KCL storage solution (10ml bottle), lanyard and user manual 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 dont have to discard the entire pen