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Image Number D766-1

Chemist Randal Shogren performs a test to determine how much sorbitol citrate is needed to prevent scale, the crusty buildup of calcium carbonate from so-called hard water. Sorbitol citrate could be used as an inexpensive, environmentally friendly detergent additive.


Photo by Elizabeth Krietmeyer.

640 pixels wide: (d766-1.jpg)

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