Interpretation of Cpk

[teckkwang.loh@epcos.com]

Hi group,
  I was reading this report of a process in my company which reports a
process's Cpk between 5.5 - 8.0 (depending on different machines)
I really doubt the value of the Cpk for this report.  A Cpk of 2.00 means
0.0018ppm.  So, what s the interpretation of a Cpk of 8.0???  Isn't it
practically 0ppm?....
Can that be possible?

And how do we interpret Cpk into ppm? (I.E. If the Cpk is 1.45, how can we
check the ppm value?)

Can anyone pls help to interpret and explain this representation.
Thanks


Cheerio.
Teck