Some elaboration on Brian's comments:
1. IPA  is the main diluent in most if not all flux formulations, so
components will take exposure to it.
2. IPA can enter the body via both dermal and inhalation routes. They are not
exclusive, but additive. Therefore, if you get IPA on the skin, it will lower
the amount that you can be exposed to via inhalation. This should be made
clear to operators as an encouragement to follow all safety measures during
exposure to IPA.
3. Pure IPA, in a cleaning machine or not, is not a great cleaner, especially
when you must remove heavy soils such as greases or waxes. Thus, most of the
in-line cleaning equipment users have a first bath of the cyclohexane-IPA
azeotrope, which does a great job of heavy soil removal. The pure IPA in the
following baths were used only for rinsing and drying, not for cleaning. These
combination machines did do a good job of cleaning, provided the proper cleaning
tests were done prior to purchasing the equipment.

Bill Kenyon
Global Centre Consulting
3336 Birmingham Drive
Fort Collins, CO   80526
Tel: 970.207.9586     Cell: 302.377.4272

---------------------------------------------------
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 847-509-9700 ext.5315
-----------------------------------------------------