N840G/SR/SH Vacuum Pump and Systems
Chemically resistant, compact, and oil-free diaphragm vacuum pump with manual speed control for adjusting the pump capacity to your specific application. It features a gas ballast, PTFE/TFM heads, PTFE-coated diaphragms, and FFPM valves. Suitable for a wide range of Laboratory applications including extremely aggressive/corrosive gasses and vapors. These pumps are expandable, separators and/or condensers can be purchased indi…
Clockwise from bottom-right: N840G, SR840G, SH840G
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Technical features:
- Ultimate vacuum of 4.5 torr
- Adjustable flow rate from 20-34 l/min
- 100% oil-free transfer – thereby pure transferring, evacuation and compression of gases
- High level of vapor and condensate compatibility
- Ideal for extremely aggressive/corrosive gases and vapors
- ATEX compliant according to II 2/-G IIB+H2 T3 internal atmosphere only
- Integrated gas ballast valve
- Expandable: Separators and/or condensers can be purchased individually at any time and easily fitted, enabling users to build their own customized vacuum system
- 3-color status display for in operation / stand-by / error
- Integrated rotational speed control
- Environmentally friendly
- Starts against ultimate vacuum of the pump
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
