Labconco Two and Six-Place (Macro) Kjeldahl Distillation Systems 2125603 User Manual
Page 14
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Normal Operation Start-Up
1. The KNA apparatus is designed for use with either 500 or 800-ml
Kjeldahl Flasks. The distillation heaters are free to move forward or
backward on the runway to accommodate either size flask.
2. Turn the heat controllers to the high setting on both the Digester and
Distillation racks if both racks will be used simultaneously. Wait
approximately 5 to 10 minutes to insure proper preheating.
3. Turn on either the acid fume removal blower or water aspirator
(depending upon model number purchased). Place a small piece of tissue
paper over the nipple on the digestion manifold. Suction should be
sufficient to hold 2" x 2" tissue paper in place.
A generalized Kjeldahl Total Nitrogen method is present in Appendix C. The
method does not detail sample preparation or preservation procedures, which
may be required depending on specific types of samples.