Dear Taegon Lee , It is actually quite simple . Dissolve the organic coating in alcohol , ethanol and measure the coating thickness with spectrophotometer at a particular wavelength recommended by the chemical supplier . Correlate the reading with the mathematical calculation which I believe the supplier would have . Thanks . >Hello technetters. > >Can anyone inform me of the method to measure thickness >of pre-flux(somebody calls this Entek). >Our factory is using Tamura chemical. >It is preferable if the method is nondestructive. > >Thanks. > >Taegon Lee ([log in to unmask]) >SEMCO > >################################################################ >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 web site (http://jefry.ipc.org/forum.htm) for additional information. >For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311 >################################################################ > > > Richard Lim ################################################################ 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 web site (http://jefry.ipc.org/forum.htm) for additional information. For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311 ################################################################