Mark:

Get in touch with me directly on this matter, [log in to unmask]

When you analyze this stuff, you analyze for HCl and active Ferric, and the
HCl analysis is REALLY difficult, we "collect" methods for this, and have
something like 6 different ones, on of which we developed ourselves.  The
analysis for the Ferric itself often will change, depending on the metals
being etched.

Rudy Sedlak
RD Chemical Company

##############################################################
TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c
##############################################################
To subscribe/unsubscribe, send a message to [log in to unmask] with following text in
the body:
To subscribe:   SUBSCRIBE TECHNET <your full name>
To unsubscribe:   SIGNOFF TECHNET
##############################################################
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
information.
If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or
847-509-9700 ext.5365
##############################################################