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Bluelab pH Pen (used)


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

  • Availability: 24 In Stock

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