Dear Emil, The reason for oxide weight gain testing is to insure that the coating does not become excessively thick, which will lead to reduced wetting and encapsulation of the oxide coating by the resin. This in turn will reduce bond strength. The thickness measurement is an excellent process control technique and is easily implemented in production. -----Original Message----- From: emilio cagmat [SMTP:[log in to unmask]] Sent: Wednesday, June 02, 1999 3:50 AM To: [log in to unmask] Subject: [TN] Black Oxide Thickness Control Hi Technetters, Our supplier for our new Black Oxide chemical was discussing about the Black Oxide Thickness Control, the method of Weight gain and Weight loss test. I just need some elaboration of the principles behind these subject and some specifications. I could not find some technical writings at this moment... thanks in advance for the help emil ################################################################ TechNet E-Mail Forum 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's web site (http://www.ipc.org) "On-Line Services" section for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################ ################################################################ TechNet E-Mail Forum 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's web site (http://www.ipc.org) "On-Line Services" section for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################