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Easy-to-use LED display panel
Cloth pouch
Use 1-2 teaspoons per 5 gallons of water (1-2 grams per gallon)
use the KCl solution to store the pH pen/probe after use and hydrate monthly
Increases cloning success rates
Bluelab pH 4.0 Calibration Solution 500ml timer Easy-to-use LED display panelBluelab calibration solutions are essential for use with all Bluelab products. Bluelab Solutions are manufactured specifically for Bluelab products and are referenced to high laboratory standards to ensure your Bluelab products last longer and maintain accuracy.
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