This International Standard specifies a method of de-termining the nitrogen content of hard coal, brown coal and lignite by the semi-micro Kjeldahl method.
BS 1016-106.2:1997 history
1997BS 1016-106.2:1997 Methods for analysis and testing of coal and coke - Ultimate analysis of coal and coke - Determination of nitrogen content
1996BS 1016-106.1.1:1996 Methods for analysis and testing of coal and coke. Ultimate analysis of coal and coke. Determination of carbon and hydrogen content. High temperature combustion method
1977BS 1016-6:1977 Methods for analysis and testing of coal and coke - Ultimate analysis of coal