From: Phil Eaton Sent: Thursday, April 29, 1999 11:42 AM > I apologize for this simple question, but what are DOC's? Dissolved Organic Carbons are defined as the fraction of total organic carbon (all carbon atoms covalently bonded in organic molecules) in water that passes through a 0.45 micron pore-diameter filter. Total Organic Carbon (TOC) is measured by the amount of carbon dioxide produced when a water sample is atomized in a combustion chamber. -Y- David A. Youngker http://www.mindspring.com/~nestor10 nestor10@mindspring.com ------------------------------------------------------------------------- This is the apistogramma mailing list, apisto@majordomo.pobox.com. For instructions on how to subscribe or unsubscribe or get help, email apisto-request@majordomo.pobox.com. Search http://altavista.digital.com for "Apistogramma Mailing List Archives"!