IPA should work well.  It is used a media for ROSE testing and is rather
harmless to most electronics in general.  In that test they use a 75%
IPA & 25 % water.  I suspect that you could also blend the 2 as you see
fit.  Since water has a higher density it propagates the ultrasonic
forces better than the IPA. 

Hence the recommendation to use the IPA. 

Rich K / KEDS

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Eric CHRISTISON
Sent: Tuesday, September 12, 2006 9:19 AM
To: [log in to unmask]
Subject: [TN] US Cleaning in IPA

We're currently ultrasonically cleaning some plastic parts in DI water
and may be incurring some microscopic damage to the surface.

We've been directed to use IPA rather than DI water as a cleaning medium
to give a gentler clean to reduce damage.

Does this sound like a good plan and would there be any other fluids
that would be more suitable?

Regards,


--
Eric Christison Msc
Mechanical Engineer
Home Personal, Communication Sector
Imaging Division

STMicroelectronics (R&D) Ltd
33 Pinkhill
Edinburgh EH12 7BF
United Kingdom

Tel:    +44 (0)131 336 6165
Fax:    + 44 (0)131 336 6001

---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 1.8e
To unsubscribe, send a message to [log in to unmask] with following text
in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to
[log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to
[log in to unmask]: SET Technet Digest
Search the archives of previous posts at:
http://listserv.ipc.org/archives
Please visit IPC web site
http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional
information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100
ext.2815
-----------------------------------------------------

---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 1.8e
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
-----------------------------------------------------