Hi Yvonne, sure it's rusted iron and not oxidized copper? Actually, if steel is used, then it should be stainless steel.
Anyway, like DK, I would not be upset too much, as iron oxide is not volatile and not likely to support growth of bacteria and fungi (maybe some extremophiles will like it, however :). _______________________________________________ Methods mailing list [email protected] http://www.bio.net/biomail/listinfo/methods
