Apera EC Calibration Kit

Golden Valley Hydroponics Verified independent store

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The Apera EC Calibration Kit is a must-have for any serious cultivator. With its 2.77 EC conductivity standard calibration solution, you can easily ensure the accuracy of your read ings. This non-hazardous, American-made product is perfect for maintaining the cleanliness and longevity of your EC/ppm probe. Keep it stored in a cool place and out of reach of children. Show more