Are the results of contamination testing comparable if different solvent mixtures (75% v/v 2-propanol/water and 65% v/v 2-propanol/water) are used in static test (omegameter)? The exact solvent mixture is known and used in calculation of surface ionic density. B.R. Jarmo Kiiski ############################################################## 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 ##############################################################