LABOPORT® Vacuum Pumps
The chemically resistant LABOPORT diaphragm pumps are single-head and double-head dry-running devices used in a wide range of laboratory applications. They transfer and pump down without contamination. The heart of these very compact pumps is a KNF structured diaphragm. As a result, we were able to make the pumps smaller while increasing the service life of the diaphragm. The pumps are available with various flow path materia…
Clockwise from top: N860.3, UN840.3, UN842.3, UN820
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Durable and easy to maintain
Rotary evaporation
We purchased a number of these pumps for rotary evaporation of organic solvents. The pump are incredible durable and stand up to endless hours of abuse. They are also easy to maintain. KNF serviced some older pumps we had and they are as good as new.
Review Date: 15 Jul 2022 | KNF Neuberger, Inc.
Laboratory Work
It is still a very good vacuum after 6 years. It has high resistance. Quality service, but slow.
Review Date: 22 Apr 2014 | KNF Neuberger, Inc.
Technical features:
- Ultimate vacuum from 1.5 torr to 75 torr.
- Flow rates from 10 l/pm to 110 l/pm
- 100% oil-free transfer
- Pure transferring and evacuation of gases
- Highly compatible with vapors and condensation
- Chemically resistant
- Suitable for highly aggressive or corrosive gases and vapors
- Maintenance-free
- Environmentally friendly
- Gas-tight, leakage rate approx. 6 x 10-3 mbar x L/s, not tested in serial production.
Models: UN810, UN820, UN840, UN842, UN860
How to select a pump for rotary evaporation
Methylene chloride and pentane, do not require as deep of an end vacuum to evaporate as solvents such as acetonitrile, benzene, and chloroform. The removal of solvents with high boiling points, such as water, DMSO, DMF, and toluene requires a relatively deep end vacuum. You must ensure that the pump is capable of reaching an end vacuum deep enough to remove the target solvents efficiently. Download this application note to find the answers to four key questions when selecting a pump.
Next generation of KNF LABOPORT<sup>®</sup> pumps
KNF presents a new series of LABOPORT® pumps—models N 96, N 820 G, and N 840 G—delivering the well-known LABOPORT performance in a striking new design. N 820 G, and N 840 G include an integrated gas ballast valve to facilitate short process times, even for high-boiling solvents. The smooth rounded surfaces of all three pumps enable easy and thorough cleaning.
KNF designed the new pumps with benchtop space and portability in mind. Compared to appropriate existing KNF pumps, these new models offer a 10 – 20% footprint reduction to free up valuable benchtop space and a 5 – 30% weight reduction for improved portability.
The two larger pumps are easily expanded into custom-tailored vacuum systems by simply connecting an optional separator and/or condenser module. This modular approach provides a cost-efficient way to expand pump functionality as needs grow.
Maximum flow rates for the new series range from 7– 34 L/min with ultimate vacuum levels of 97.5 – 4.5 torr. Applications include rotary evaporation, degassing, filtration, SPE, fluid aspiration, gel drying, centrifugal concentration, vacuum ovens, and more.
Next generation of LABOPORT vacuum pumps
Laboratory pump technology with a unique design
Hello new LABOPORT systems
Well-established product line grows, offering a unique design and uncompromising functionality
