KDN-520 full automatic Kjeldahl azotometer is a distillation system which can automatically detect nitrogen and it is designed by the classical (Kjeldahl) method. The main processes of the instrument include automatic water filling (including automatic water level detection), automatic dilution, automatic alkali dosing, automatic acid dosing, automatic distillation, and automatic stop, etc.

Measure range: 0.1mgN-200mgN (nitrogen content 0.1%-99%)
Recovery rate: ≥99% (relative error,include digestion process)
Repetition rate: relative standard deviation<±1%