dpm and ppm

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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 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. IP: Logged
si kang Lurker (<10 Posts) Posts: 6 From:seoul,korea Registered: May 99	posted 11 July 1999 12:04 PM Hello, Unfortuantely, I didn't receive any response as to PPM vs DPM. Your response will be highly appreciated. Thanks. SI Kang. IP: Logged
Marc Smith Cheech Wizard Posts: 4119 From:West Chester, OH, USA Registered:	posted 11 July 1999 01:28 PM I don't know anything about dpm. Maybe one of the other folks does. Sorry I can't help out. IP: Logged
barb butrym Forum Contributor Posts: 637 From:South Central Massachusetts Registered:	posted 11 July 1999 09:54 PM 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).] IP: Logged
Don Winton Forum Contributor Posts: 498 From:Tullahoma, TN Registered:	posted 12 July 1999 02:53 AM 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 ------------------ Just the ramblings of an Old Wizard Warrior. Check Out dWizard's Lair: * Dead Link Removed * IP: Logged
[email protected] unregistered	posted 07 December 2000 04:58 PM 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 IP: Logged

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