Apera GroStar GS2 Soil pH Pen Organics SLF-100 is a commercially proven

SLF-100 is a commercially proven enzymatic formula with over 18 years of proven success

USB AC adapter

It is fully biodegradable and non-toxic to animals

humic acid

Apera GroStar GS2 Soil pH Pen Organics SLF-100 is a commercially provenAI31020 GroStar GS2 Soil pH Pen Lab grade instruments designed specifically for growers! Includes: 2 year warranty (instrument) 1 year warranty (probe) pH 7 & pH 4 solution (50ml bottles of each) KCL soaking solution (10ml bottle) Cleaning brush Hole dibber Lanyard and user manual Features: Measures pH and temperature in nutrient solution, soil, coco coir, rockwool, and many other media types Premium probe technologies and materials ensure high