Thanks Mike
Your comments are greatly appreciated, as I have been trying to get things changed over to plastic, with little success, and this will add more ammunition to my case against copper plumbing.  Again, if any one else in Histoland,  has any experience or concerns with the use of copper plumbing in the drain systems, of a Histology/Cytology Lab I would like to hear from you, as your comments would help build  my case against this system, as I don't think any one here is taking me very seriously, and I think, that they wish I would just go back to my Microtome and leave the thinking to them..
Many thanks
Kerry Beebe ART
Kelowna Gen Hosp
Canada
bbracing@silk.net