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Traceability of raw materials is maintained principally by

  • A.testing the finished fired product at regular intervals
  • B.buying from one single approved supplier only
  • C.recording the lot number of every delivery against each batch made
  • D.keeping a retained sample of each and every single delivery received

Answer: C

Correct answer: recording the lot number of every delivery against each batch made

Traceability is a record linking material to product: which delivery went into which batch, so that when a fault appears the affected product can be identified and the responsible material found. Testing the finished product detects a problem without locating its cause, a single supplier reduces variety without providing a link, and retained samples support an investigation but only if the records say which sample to look at.

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