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Acid reflux experiment

Acid reflux experiment

C010/9144

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Credit

MARTYN F. CHILLMAID / SCIENCE PHOTO LIBRARY MARTYN F. CHILLMAID / SCIENCE PHOTO LIBRARY

Caption

Acid reflux experiment. Acid reflux from the stomach can be neutralized by antacid. Here, the universal indicator has turned yellow, indicating the presence of an alkali, which is the milk of magnesia (magnesium hydroxide) being added. For a sequence showing the changes as the acid is neutralised by the addition of an antacid, see images C010/9143-9145.

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