Idiomas disponibles
Idiomas disponibles
Soxtec™ 2050 Automatic System
2 Introduction
2.1 Brief Description
Extraction is used to isolate soluble matter such as crude fat, additives, pesticides and
critical minor constituents from complex materials. Extraction analysis is tradition-
ally based on the Soxhlet principle because of its universally accepted accuracy and
reproducibility.
However, conventional Soxhlet analysis involves tedious and timeconsuming man-
ual work and explosion hazards.
The patented design of the Soxtec™ 2050 Automatic Extraction System makes it
possible to perform extractions using a wide range of solvents, in a quicker, safer and
more economical way compared to Soxhlet extractions. The technique reduces ex-
traction times to less than 20 % of Soxhlet times and recovers 70-80 % of the solvent.
The combination of the Soxtec extraction technique and the wide range solvent use
makes the Soxtec 2050 Automatic Extraction System a flexible and powerful tool in
the analysis of soluble compounds from materials such as food, feed, soil, fibres,
chemical technical products and pharmaceuticals.
Samples to be analysed are weighed into thimbles and inserted into the Extraction
Unit. After solvent addition to the extraction cups, the soluble material is extracted
into the solvent in a two-stage process followed by a solvent recovery cycle. Finally
the extraction cups are dried and weighed.
The Soxtec 2050 Control Unit controls the temperature of the hot plate, opens and
closes the cooling water supply and has timer functions for the various steps in the
extraction procedure. The positioning of the sample thimbles and opening/closing of
valves for solvent recovery is also controlled via a Drive Unit. The Control Unit is
also equipped with an air pump for evaporation of the last traces of solvent from the
extraction cups.
2.2 Performance Data
Maximum sample volume
Capacity per batch
Speed of extraction
Repeatability
Heat-up time for hot plate
User Manual 1000 7414 / Rev. 4
Approx. 45 ml (33x80 mm thimbles)
6 samples
Typically 30-60 minutes, depending on type of sample
1 % relative or better
From 20 to 285 °C in 8-10 minutes
2:1
