Gee this reminds me of a joke I once heard about a rock band and a movie .....But seriously the term heavy metals is most commonly utilized in our Industry to denote metallic contamination in a substance ( Air, Water, Tissue, Solution) and usually is referring to such metals such as Lead, Nickel , Chromium,Cadmium,Mercury, etc. Scientifically Speaking could call any element in the periodic table that are in columns IIIB,IVB,VB,VIB,VIIB,VIIIB, IB,IIB. Or simply put Sc(21) to Zn(30) , Y(39)to Cd(48) and Hf(72) to Tl(81). The Lanthanide and Actinide Series are sometimes referred to as Rare Earths, ( another rock band ) ----------stance( From: Don Fumia To: [log in to unmask] Subject: [TN] Heavy metals Date: Monday, March 30, 1998 9:38PM What are heavy metals? %&&&&&&&&&&&&&&&&&&&&&&&&&&&% Don F. Fumia [log in to unmask] Schneider Automation No. Andover MA 978-975-9344 FAX x9714 %&&&&&&&&&&&&&&&&&&&&&&&&&&&% ################################################################ 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 web site (http://jefry.ipc.org/forum.htm) for additional information. For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311 ################################################################ ################################################################ 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 web site (http://jefry.ipc.org/forum.htm) for additional information. For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311 ################################################################