Hi Steve - take a look at ANSIJ-STD-003 Solderability for PWBs. You may be able to conduct your own solderability tests or there are several labs (check the IPC services directory) that can help you out. Dave Hillman Rockwell Collins [log in to unmask] [log in to unmask] on 01/19/98 05:49:48 PM Please respond to [log in to unmask]; Please respond to [log in to unmask] To: [log in to unmask] cc: (bcc: David D Hillman/CedarRapids/Collins/Rockwell) Subject: [TN] PCB Solderability Analysis Hello Technetters, I have been experiencing considerable defects across the wave solder with one particular vendors PCB's. My question is what guidelines are most commonly used to perform a solderability analysis and can anyone suggest a good lab for having this done. Thanks in advance, Steve Tucker