What is the difference between EPA TO-14, TO-14A, and TO-15?
EPA method TO-14 was originally published in March 1989 in the Compendium of Methods for the Determination of Toxic Organic Compounds in Ambient Air. In January 1999, EPA TO-14 was revised and updated as TO-14A in the Second Edition of the Compendium of Methods; as such, EPA TO-14 has been superseded by TO-14A. TO-15 was a new method added to the Second Edition of the Compendium in January 1999. TO-15 is larger in scope and better defined for the analysis of VOCs in air and other gaseous matrices than TO-14A. In practice, TO-15 has supplanted TO-14A as the preferred method for the analysis of VOCs in air. Unless otherwise specified by project documentation, permit requirements or other regulation, TO-15 is the method recommended by Columbia Analytical. View Frequently Asked Questions for all analytical services…
