Perfect for quick and easy pH and temperature readings direct from your solution. The Bluelab pH Pen provides a compact, quick and handy way to manage the success of your crops to ensure maximum uptake of nutrients. A key parameter that affects nutrien Features: - 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
