Good afternoon to everyone, Does some of you know if there is a kind of specification or whatever you can call it, for the incomming water in a PWB manufactury ? Max acceptable torbidity, hardness, BOD, Iron, Ca-Mg, ecc.?? I know it's not an intresting question but thank you anyway for taking your time. Franco ################################################################ 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's web site (http://www.ipc.org) "On-Line Services" section for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################