Measurement of the pH scale, pressure gauge, infographics. pH is a logarithmic scale used to specify the acidity or basicity of an aqueous solution 1. Januar 2023 2023-01-01T18:30:52+01:00 Measurement of the pH scale, pressure gauge, infographics. pH is a logarithmic scale used to specify the acidity or basicity of an aqueous solution by Nahrungsergänzung Kleemann 1. Januar 2023