Units feature all the advantages offered by chemistry diaphragm pumps including quiet, waterless and oil-free operation, plus an ultimate vacuum down to 0.6mbar
John Morris Scientific is supplying the new Vacuubrand Vario pumping units - ideal for demanding applications like combinatorial chemistry.
They offer the most advanced combination of high performance mechanics with the latest in electronic control technology.
The Vario pumping units feature all the advantages offered by chemistry diaphragm pumps including quiet, waterless and oil-free operation, plus an ultimate vacuum down to 0.6mbar.
Also, all parts coming into contact with vapours and gases are made of chemically-resistant fluorinated plastic materials.
In combinatorial chemistry, high boiling point solvents like DMF or DMSO are often used.
This has a tremendous influence on vacuum requirements for concentration and evaporation processes.
Evaporation temperatures can, or should not be increased, so therefore, a low working pressure is required.
The Vacuubrand Vario pumping unit is a multi stage diaphragm pump with a variable speed motor, providing quick and adaptive adjustment of the pumping speed to the actual process requirements.
Compared to traditional two point controlled vacuum systems, pressure can be controlled to the point at highest evaporation speed.
The Vario pumping units provide automatic detection of vapour pressure, as well as automatic adaptation of the vacuum to the process requirements.
This saves more than 30% of the average process time.
Solvent recovery rates near 100% can be reached through continuous evaporation, enabling operation and maintenance costs to be minimised.
Vario diaphragm pumps offer an outstanding pumping speed, quiet operation and enhanced lifetime. Pre-programmed routines or complex processes can be improved via the built-in RS 232C serial interface.
