Acid test. A pH indicator changes the color depending on the pH of the solution. Here a universal indicator paper strip has changed color from yellow to red after it was put in contact with a freshly sliced lemon (citric and ascorbic acids)
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Details
Creative#:
TOP22293658
Source:
達志影像
Authorization Type:
RM
Release Information:
須由TPG 完整授權
Model Release:
N/A
Property Release:
No
Right to Privacy:
No
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