Labconco Open Combination (Macro) Kjeldahl Systems 2123Series - Manual (Page 6)

Chapter 1: Introduction
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General Description
Labconco’s Open Combination (Macro) Kjeldahl Nitrogen System is
designed to facilitate the determination of Total Nitrogen content within
materials such as feeds, grains, soils, fertilizers, plant tissue, water, organic
wastes, and food products. The expression ‘Macro’ identifies the size of
sample vessel and the sample size that can be used with this equipment.
Other Kjeldahl systems are available, which use smaller sample vessels and
require smaller sample sizes. The apparatus can be used for the digestion
and/or distillation of all types of nitrogen containing samples. The system
consists of the Lower Digestion rack and Upper Distillation rack. Both are
used in standardized (Macro) Kjeldahl Nitrogen Determination Methods.
This Kjeldahl system is not enclosed, excess heat and personnel safety during
the digestion and distillation reactions should be considered when selecting
an installation location. High temperature acid digestion and caustic
distillation comprise the two-step Kjeldahl Nitrogen determination method.
2123202 Six Place Open Combination Macro-Kjeldahl System