Ted,

Measling occurs in the laminate itself and doesn't affect the soldermask.  If 
you are concerned about the mask, is it blistering, not measling?  Measling will 
be white dots in a pattern.   It's usually caused by thermal stress.  The fiber 
bundles separate at their intersections.  It's not uncommon, and generally 
harmless if it's localized.   If what you are seeing is not a white spot pattern, 
but random, it might be mask blistering, in which case you could have a 
problem if it allows conductors to be exposed as mask flakes off.  How much 
do you trust your vendor in reporting results of their tape test (if they did 
one)?

Pete

---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
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
-----------------------------------------------------