Division 6.7.1 Check that no loss of nitrogen occurs as a result of excessive heat or mechanical leaks during distillation, by using a test portion of 0,15 g of ammonium oxalate or sulphate (4.9.) weighed to the nearest 0,001 g together with 0,1 g of sucrose (4.8.).
United Kingdom
The percentage of nitrogen recovered shall be between 99,0 and 100,0 %.
Lower or higher results will indicate failures in the procedure and/or inaccurate concentration of the standard solution (4.7.).