In a message dated 04/10/2000 7:36:41 AM Central Daylight Time, [log in to unmask] writes: << We recommend the use of deionized water in all aqueous cleaning operations. For us, deionized water is 2.0 megohm-centimeters of resistivity or higher. Being metrically challenged, I am not sure what that is in microsiemens per centimeter. Doug Pauls CSL >> Good Mornin' All! Here's a little chart to convert resistance into microsiemens: Deionized Water Resistance in Megohm Equivalent readout in µS/cm 1 Mohm 1.000 µS/cm 2 Mohm 0.500 µS/cm 5 Mohm 0.200 µS/cm 10 Mohm 0.100 µS/cm 15 Mohm 0.067 µS/cm 20 Mohm 0.050 µS/cm 50 Mohm 0.02 µS/cm -Steve Gregory- ############################################################## 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 Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ##############################################################