Total Nitrogen


  1. Mix sample in container and place representative sample in tared Kjeldahl digestion tube. Weigh 5 g of sample. Use 5.000 in the calculation on the control unit. Follow procedure for nitrogen determination for feed samples.
  2. Report to 3 decimal places.


  1. Run nitrogen according to feeds procedure.
  2. Calculation for ammonia determination and total nitrogen.
  3. %NH4-N or %Total N = 1.401 x N H2SO4 x (mL acid)/sample wt (g)