Steve-
1. Did you try the methylene chloride test (IPC Test Method) to look for
degree of cure?
2. To check for organics on the copper surface (could be from plating bath)
the organic contaminant check is quick and inexpensive (IPC TM-650 2.3.38;
Trace Labs used to sell test kits to do this test).
3. If there is a UV cure involved, are the UV lights monitored for output?
Had a residue problem after soldering at DEC, found their UV lights were low in
output, ran scrap solder masked PWBs through the cure step until they passed.
Took 3 passes to get enough UV from the dying lamps!!
4. Has Kyzen offered any suggestions as to the problem and possible solution?

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

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