House & Garden Shooting Powder - 20 Pack BS5 Calibration of the pH probe

Calibration of the pH probe is simple as instructions are supplied on the back of the meter and the easy push button method makes this one of the simplest meters to use

It's a wise choice for anyone (including parents with children) who have sensitive skin or who are prone to any types of skin discomforts/conditions

pH 4 & 7 for calibration

The base is square with dimensions of 10 cm

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