TechNetters, I would like to know if there's any existing standard or article that indicates or calls-out that the minimum resistivity for DI water used in aqueous cleaning is 0.1Meg-Ohm (This is what I know for other types of electronic asssemblies). Is this applicable to all types of electronic assemblies ? In our operations, we are currently using 0.2 as minimum resistivity and I am planning to lower it down to 0.1 but before I proceed in performing the experiment/evaluation, I need to understand and know what is being called-out as a standard. What are the other type of test/s that could be performed aside from Ionic Contamination Test in order to prove out that 0.1 DI water really have that cleaning capability ? Thanks... Armand Nitro ############################################################## TechNet Mail List 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://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or 847-509-9700 ext.5365 ##############################################################