It depends on what you are rinsing. LK On Wed, 20 Jan 1999, N Radhakrishna wrote: > We are installing a R O plant to recycle effluent water. We find that the > Total dissolved solids to be alright at 60 PPM but find that the copper in > the water to be about 1 PPM. > > Is there any bad effects of presence of copper in rinse waters. Whereever > criticallike bath makeup,gold plating etc we use DI water. > > If no how much is tolerable. > > An immediate reply on the above will be much appreciated. > > Regards > > N Radhakrishnan > > ################################################################ > 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 > ################################################################ > > ################################################################ 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 ################################################################