Blue Lab pH Pen
This user-friendly and hardy handheld pen will take measurements in increments of 0.1 pH and is fully temperature compensated, so you can expect accurate readings every time.
Our products are designed and built for grower environments - not the lab - so you can relax knowing that your pen can withstand the knocks, drops and deep-water plunges that come with everyday growing. In fact, the fully waterproof Bluelab pH Pen is designed to float when it lands up in your reservoir.
- Fully waterproof - not just water resistant
- Simple two-point calibration process for accuracy
- One-year peace-of-mind warranty
- Automatic temperature compensation for accurate readings everywhere
- Auto-off function to extend battery life
- 1 AAA battery included - simply power on and go