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Mix 1ml per liter (4ml/gal) – Always adjust pH to 5
✅ Precision Flow Rate – 6mm inner diameter maintains perfect pressure
Ground Malt Barley
Its advanced features ensure optimal lighting conditions
Bluelab Electrical Conductivity (EC) Pen Preserve Mix 1ml per liter (4ml/gal)Bluelab 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
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