David: It is astonishing that a guy as incredibly knowledgable as yourself does not know about Hach test kits, but it speaks to what working at govmint contractors can do. Hach test kits are for the folks who do not have dedicated labs, with dedicated chemists, for effluent analyses. They are reasonably portable, simple, tests for various contaminants. They are usually colorimetric. They do have their program really well put together, and allow non-chemists to get good results, (usually). The company is Hach Chemical, and they are out of Loveland Colorado. Rudy Sedlak RD Chemical Company *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To unsubscribe from this list at any time, send a message to: * * [log in to unmask] with <subject: unsubscribe> and no text. * ***************************************************************************