Bluelab Electrical Conductivity (EC) Pen Preserve Run-to-Waste Systems: Use 5ml per

Run-to-Waste Systems: Use 5ml per liter of working nutrient solution

Mix 1ml per liter (4ml/gal) – Always adjust pH to 5

Engineered for serious cultivators who refuse to compromise between power and peace

or container gardens

🌿 A truly organic approach

Bluelab Electrical Conductivity (EC) Pen Preserve Run-to-Waste Systems: Use 5ml perBluelab Conductivity Pen Precision Nutrient Monitoring for Healthier Plants Upgrade your gardening toolkit with the Bluelab Conductivity Penthe gold standard in measuring conductivity (EC TDS PPM CF) and temperature for hydroponics, soil farming, and more. Built on the same trusted technology as the legendary Bluelab Truncheon, this pen delivers fast, accurate, and reliable readings to optimize plant nutrition. Why the Bluelab Conductivity Pen is a