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Raw materials are weighed on a dry basis, which means the recipe assumes

  • A.no moisture is present in any material
  • B.every material carries the same moisture
  • C.moisture is irrelevant to the proportions
  • D.the batch is weighed after firing

Answer: A

Since delivered materials do carry moisture, the weighed quantity must be increased to supply the intended dry mass. Ignoring this puts every proportion in the recipe out by a different amount. The correction differs for every material in the recipe.

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