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To Test Bar Soap pH
Wet the soap bar in running water. Rub the bar with your hands until you get some bubbles or a thin film of liquid soap on the outside of the bar. Wet your pH paper with the soap bubbles/film and check the reading.
To Test Liquid Soap and Cream/Lotions
[if gte mso 9]>
2. Shake off any excess liquid
2. Compare and match colour with the colours listed.
3. Adjust your product if needed and retest.