pH Buffer 4.01 and 7.0 Calibration Fluid suitable for Hydroponics 2x250ml

pH Calibration Buffer Colour Coded pH 4.01 and pH 7.014.01 - Red, 7.0 - Yellow This pack contains 250ml of each pH Value (2x250ml) - Product Code: PHCB47-C - Pack Size: 2 x 250ml Description Highly accurate pH Buffer solutions for calibration of pH meters.

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