6
Intended Use
DG 2.1S user manual V6880, version
3.3
Operating range
Gases that have dissolved into the solvent can cause bubbles in pumps and
detectors. Good chromatographic separation therefore requires degassing the
solvent. The analytical 2-channel degasser DG 2.1S is equipped with two degas-
sing chambers and can thus simultaneously degas two solvents.
The device can be used in the following areas:
Biochemistry analyses
Chemical analyses
Food analyses
Pharmaceutical analyses
Environmental analyses
Chiral analyses
The degasser is, e. g., used at universities, research institutions, and routine lab-
oratories.
Features
Reliable and convenient degassing of up to two eluents at the same time.
Teflon AF
®
allows high gas diffusion rates
Constant performance vacuum pump for high baseline stability
Chamber volumes lower than 0.5 ml, thus fast eluent changes are possible
Very good physical and chemical stability
Degassing Principle
While the solvent flows through the short Teflon AF
®
tubes, the dissolved gases
are removed from the solvent by means of a vacuum on the other side of the
membrane.
An integrated vacuum pump maintains a constant vacuum.
Structural properties of the Teflon AF
®
membrane accelerate the degassing
process.
The solvophobic and hydrophobic properties of Teflon AF
®
reduces the risk
of contamination when exchanging the solvent.
Fig. 3 Degassing principle
