pH Pen

Out of stock

“This is one reliable meter!” The Bluelab pH Pen will quickly and accurately measure your hydroponic solution’s acid/ alkaline balance. Use to maximize plant nutrition and ensure optimum plant health, growth and yields.

• Successful calibration indicator
• Measures pH and temperature
• Completely waterproof
• Backlit LCD display
• AAA alkaline battery included
• Warranty: 1-year repair or replacement

Product Manual (PDF)


Step1: Press power button and place probe in solution. Wait for reading to stabilize.

Step 2: To hold reading press power button again.

Grower’s Tip:
To ensure accurate readings the double junction probe needs to be rinsed in water after each use and cleaned prior to calibration.