Emily Tse wrote: > Dear TNers, > > My team is trying to carry out an experiment under IPC-TM-650-Test Methods > Manual (number 2.3.24.1) - a Porosity Testing of Gold Electrodeposited on a > Nickel Plated Copper Substrate Electrograhpic Method. The test is a bit > outdated but it seems to fit the best in our evaluation at this stage. > > However, one of the materials required for the test is no longer available > in the market (Kodabromide, glossy finish, single wt. photographic paper, > fixed before use). From the Kodak webpage, they have suggested another > replacement of Kodabrome II RC Paper. Yet the paper base has been changed > from Fiber to RC. Will that change the result of the test? > > We would also like to know if there is any amendment on the test (if I have > missed!) as well as other possible replacement for this particular > photographic paper. > > Looking forward for your kind suggestions! > > Best Regards, > > Emily Tse > Process Development Engineering > ASAT Ltd. > > ______________________________________________ > FREE Personalized Email at Mail.com > Sign up at http://www.mail.com/?sr=signup > Emily, You might want to get a copy of ASTM B 741, "Porosity in Gold Coatings on Metal Substrates by Paper Electrography". I don't have the latest version which I think is -95. My copy of B 741-90 recommends "Kodak Dye Transfer Paper Grade FDW (Catalog No. 1455302)". The ASTM method also has several technical paper references on porosity testing. I don't believe that the current IPC-TM-650 test method is under review at this time. It probably should be if we (IPC) can find a task group with the expertise and is willing to undertake such a review. I don't personally have experience with this test. Hope this helps. -- Brian McCrory Delsen Testing Laboratories, Inc. 1024 Grand Central Ave. Glendale, CA 91201 Phone: 818 247 4106 FAX: 818 247 4537 email: [log in to unmask] URL: http://www.delsen.com/ --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d 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 delivery of Technet send the following message: SET Technet NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------