pH Calibration Buffer Solution 4.01 2oz

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Acidic buffering solution for pH meters. Features: pH 4.01 Calibration Buffer Solution - 20 mL Fundamental for the correct use of electrodes and for obtaining the most accurate and reproducible readings Sealed against light and air Ideal for on-the-spot calibration Simply open, insert the tester or electrode into the sachet and calibrate Formulated with a 5 year expiry Color coded for easy identification Show more