Buchi Distillation Unit K-355 Manuel d'utilisateur télécharger pdf (Page 17)

4 Description of function

17 K-355 Operation Manual, Version G

4.2 Function principle

The Distillation Unit K-355 is suitable for determining nitrogen using the Kjeldahl (TKN; Total Kjeldahl

Nitrogen) and Devarda methods as well as for other distillations of steam-volatile substances (e.g. of

alcohol, SO

, volatile acids).

a Sample tube

b Splash protector

c Condenser

d Distillate outlet tube

e Receiving vessel with receiver solution

Fig. 4.2: Function principle

Steam is introduced into the sample solution (in sample tube a) to drive out volatile components

(such as ammonia, alcohol, etc.). After condensation (in condenser c) the condensate is collected in

a receiver solution (in receiving vessel e).

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Buchi Distillation Unit K-355 Manuel d'utilisateur Page 17