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Reply To: | TechNet Mail Forum. |
Date: | Fri, 3 Oct 1997 09:44:13 -0700 |
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The source of the requirement for extractive testing was MIL-P-28809
(now obsolete) which in turn referenced testing done by the Navy in
Crane, Indiana. The odd units used in MIL-STD-2000A are a pure
metrification of the requirements of 28809A. The difference between 10
micrograms/in^2 and the more commonly thought of 14 units/in^2 have to
do with correction factors applied in MIL-P-28809A to recognize the more
aggressive extraction by new (at the time of 28809A's release in 1981)
automated cleanliness testers. I would note that the heated testers
used today extract even more aggressively but this effect is only seen
by comparing PWA data (not a NaCl control).
Jim Maguire
===============================
Jim Maguire
Senior Principal Engineer
Boeing Defense & Space Group
PO Box 3999 M/S 3W-97
Seattle, WA 98124-2499
Phone (206)657-9063 Fax 657-8903
Email: [log in to unmask]
================================
> ----------
> From: ROBERT MEINERT[SMTP:[log in to unmask]]
> Reply To: TechNet Mail Forum.;ROBERT MEINERT
> Sent: Friday, October 03, 1997 9:02 AM
> To: [log in to unmask]
> Subject: [TECHNET] MIL-STD Cleanliness spec.
>
> Hello: Need someone to point me in the right direction for a
> source
> of MIL STD 2000A 5.3.5, Cleanliness testing/specification. Or,
> if
> that spec. is obsolete, the replacement and/or equivalent.
>
> thanks,
> Robert Meinert
> Hitachi Computer Products
> Norman, OK
> 405-360-5500 x174
>
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