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Is There A Test For Potato Solids?

Q:

Is there a test for solids other than the bucket of water and salt?

A:

Is There A Test For Potato SolidsThere is. Easiest is a hydrometer. http://www.zeal.co.uk/Hydrometers/Potato

The potato processors use this. It involves using a machine to pulverize the potatoes and weigh the solids then compare to the original weight. It's in their R&D departments.