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Bicarbonate of soda toothpaste test

Bicarbonate of soda toothpaste test

A500/0721

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Credit

ANDREW LAMBERT PHOTOGRAPHY / SCIENCE PHOTO LIBRARY ANDREW LAMBERT PHOTOGRAPHY / SCIENCE PHOTO LIBRARY

Caption

Bicarbonate of soda toothpaste test. Piece of red litmus paper being used to demonstrate the alkaline nature of toothpaste. The alkalinity is due to the presence of bicarbonate of soda in the toothpaste. This component of the toothpaste is both an abrasive and a whitener. This toothpaste is green in colour due to mint flavouring. The toothpaste is an American brand, Arm & Hammer.

Release details

Model release not required. Property release not required.

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