GroStar GS2 Soil pH Pen tents-/-indoor-greenhouses In addition to containing nitrogen

In addition to containing nitrogen

Hanna's Buffer solutions are made from established formulas and are standardized with a pH meter that is calibrated to NBS/NIST primary standard buffer solutions

Tool comes with 3 x 656-foot (200M) rolls of brown twist tie

Better humidity control for optimum growth

It features a compact design and blue powder coated steel housing

GroStar GS2 Soil pH Pen tents-/-indoor-greenhouses In addition to containing nitrogenIncludes: pH 7 & pH 4 solution (50ml bottles of each), KCL soaking solution (10ml bottle), cleaning brush, hole dibber, lanyard and user manual Measures pH and temperature in nutrient solution, soil, coco coir, rockwool, and many other media types Premium probe technologies and materials ensure high accuracy and durability with minimal maintenance Impact resistant spear glass tip, 10 times stronger than conventional glass bulb PTFE ring prevents a