This European Standard specifies a method for The determination of nitrogen in soil improvers and growing media.The dry combustion method was developed originally as a manual method by Dumas [5]. Its application is improved greatly due to The use of modern automated equipment and is applicable to all forms of nitrogen.
EN 13654-2:2001 history
2001EN 13654-2:2001 Soil improvers and growing media - Determination of nitrogen - Part 2: Dumas method