Bluelab – Soil pH Pen

The Bluelab Soil pH Pen is a tough, handheld meter designed for growers who need fast, accurate soil pH and temperature readings on the go. Built specifically for real grow environments rather than laboratories, this pen delivers reliable performance in soil, coco coir, potting mixes, and nutrient solutions.

Maintaining the correct pH is essential for nutrient availability. When pH drifts too high or too low, plants struggle to absorb vital elements, even when nutrients are present. The Bluelab Soil pH Pen helps you stay in the optimal range, ensuring efficient nutrient uptake and healthy growth.

This pen measures pH in precise 0.1 increments and uses automatic temperature compensation to deliver consistent results in any environment. Its fully waterproof design protects it from spills, splashes, and accidental submersion, making it ideal for daily use. Simple two-point calibration keeps accuracy high, while the hold-reading function allows you to capture results with ease.