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Bluelab

OnePen

The OnePen is a three-in-one, waterproof, handheld meter that measures pH, electrical conductivity (EC), and temperature in nutrient solutions.

OnePen from Bluelab

From Bluelab, the OnePen is a three-in-one, waterproof, handheld meter that measures pH, electrical conductivity (EC), and temperature in nutrient solutions. In addition to insights through the Edenic app, the OnePen on its own features a compact, ergonomic design, a replaceable double-junction pH probe, precise readings with a 0.01 pH resolution, and measures conductivity in EC, mS/cm, CF, ppm 500 (TDS), or ppm 700.

https://bluelab.com/products/bluelab-onepen?

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