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  Statistical Techniques and 6 Sigma
  dpm and ppm

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Author Topic:   dpm and ppm
si kang
Lurker (<10 Posts)

Posts: 6
From:seoul,korea
Registered: May 99

posted 30 June 1999 03:09 AM     Click Here to See the Profile for si kang   Click Here to Email si kang     Edit/Delete Message   Reply w/Quote
Hello,sir.

In any sense, you think that it's is simple and easy question.
What's the difference between dpm and ppm?
there is no diffeence?
If any difference, could you explain the difference to me?
If possible, could you please specify the usage of them?
Most people including me recognize it to be same thing and that's the point.
Your quick response will be highly appreciated.

Thanks and best regards.
SI Kang from korea.

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si kang
Lurker (<10 Posts)

Posts: 6
From:seoul,korea
Registered: May 99

posted 11 July 1999 12:04 PM     Click Here to See the Profile for si kang   Click Here to Email si kang     Edit/Delete Message   Reply w/Quote
Hello,
Unfortuantely, I didn't receive any response as to PPM vs DPM.
Your response will be highly appreciated.
Thanks.
SI Kang.

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Marc Smith
Cheech Wizard

Posts: 4119
From:West Chester, OH, USA
Registered:

posted 11 July 1999 01:28 PM     Click Here to See the Profile for Marc Smith   Click Here to Email Marc Smith     Edit/Delete Message   Reply w/Quote
I don't know anything about dpm. Maybe one of the other folks does. Sorry I can't help out.

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barb butrym
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Posts: 637
From:South Central Massachusetts
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posted 11 July 1999 09:54 PM     Click Here to See the Profile for barb butrym   Click Here to Email barb butrym     Edit/Delete Message   Reply w/Quote
I am familiar with DPMO...defects parts per million opportunity.....are they perhaps shoot offs of that?...acronyms can make you crazy...

my guess.....dpm is defects per million? and ppm is parts per milliom. ppm has been around a forever in electronics (math) and refers to delta as in value changes per million over time or temperature. Maybe dpm is defects per million allowed over a parameter.....don't know, just trying to be logical.

[This message has been edited by barb butrym (edited 11 July 1999).]

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Don Winton
Forum Contributor

Posts: 498
From:Tullahoma, TN
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posted 12 July 1999 02:53 AM     Click Here to See the Profile for Don Winton   Click Here to Email Don Winton     Edit/Delete Message   Reply w/Quote
DPM is defects per million. PPM is parts per million, as barb correctly states. While some in industry use these terms interchangeably, it is perhaps incorrect to do so. As barb stated, PPM is used in many other cases as well. One of the most popular is in the measure of contaminants. For example, the impurity level of bottled gases is stated in PPM. If PPM is used to describe defects per million, its use must be clear in the context of the message. With DPM, there is no such reason for clarity. Its use is clear.

Regards,
Don

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eldagoo@home.net
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posted 07 December 2000 04:58 PM           Edit/Delete Message   Reply w/Quote
Question.
Does anyone have a source for acceptable levels of PPM or DPM for different commodities. Something like Industry Standards?
Would appreciate the help.
Ernie


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