was10 Measurement of pH in coloured and turbid liquids

What you need: Pocket pH-Meter ad 11 pH, 20-ml samples of milk, Cola and other liquids.
* Measure the pH values of different solutions using the electronic pH meter.
Observation left: Fresh milk 6.2.
Observation right: Stale Cola 1.6.
Without photo: Lime milk 12.0, Sour cherry juice: 3.0

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