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View Full Version : What's the difference between using PPM or Defect Rate in a process?


RYEPEZ
28th September 2004, 04:47 PM
What's the difference between using PPM or Defect Rate in a manufacturing
process? Does it not mean the same? Please Help?

sas1965
28th September 2004, 05:02 PM
PPM = Parts Per Million
Defect rate = depends on what yields you use. It could mean how many out of every 100 pieces.