Total Nitrogen Methods—Applicable to All Fertilizer Samples
Keyword(s):
Abstract An extensive collaborative study was conducted to evaluate a comprehensive nitrogen method and a Raney powder method for acceptance as official methods. Twenty-nine laboratories participated; 10 samples were used and the new methods were compared to the official method, 2.045 (sulfuric-salicylic acid). Evaluation of the data and overall consideration lead to the recommendation that both new methods be adopted as official. It is recommended that 2.047 (reduced iron) and 2.049 (chromium powder) be deleted as official methods.
Keyword(s):
Keyword(s):
Keyword(s):
Keyword(s):
Keyword(s):
1997 ◽
Vol 80
(6)
◽
pp. 1235-1271
◽
Keyword(s):
1996 ◽
Vol 79
(4)
◽
pp. 907-916
◽
Keyword(s):