Bluelab pH Pen

A hardy, compact pH and temperature pen

Perfect for quick and easy pH and temperature readings direct from your solution

• 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