From€1,886excl. VAT
In stock
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Compact, oil-free vacuum pump ideal for corrosive gases, ATEX compliant, adjustable speed.
The KNF Laboport N 840 G is a diaphragm vacuum pump expertly engineered to handle chemical and corrosive liquids, providing a compact, oil-free solution for various laboratory applications. Equipped with gas ballast, PTFE/TFM heads, PTFE-lined diaphragms, and FFPM valves, this pump is highly resistant to aggressive gases and vapours. The flow rate is 34 l/min, with a final vacuum capacity of 6 mbar, and manual speed adjustment for precision operations. ATEX compliance ensures safe use within designated internal atmospheres, (Ex) II 2/-G IIB+H2 T3. Its clean, oil-free operation, small footprint, and low maintenance make it a reliable choice for procedures like degassing, drying, and distillation. For further customization, adjustable speed control provides flexibility across a range of applications.
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We're an independent team based in The Netherlands, working with research labs and procurement teams across Europe and worldwide.
With a service contract, ten to fifteen years is normal for most benchtop instruments. Detectors and pumps are the parts that wear first.
Often, yes. Verified suppliers frequently work with service partners converting the instrument. If applicable, we can list servicing options alongside the offer.
Ask a scientist through the request button. Parts are often available even when the instrument itself is discontinued.
Two to six weeks, depending on refurbishment scope and whether calibration is included.
We ship to 38 countries. Crating and customs handling are quoted with the instrument.
Tell us what you need and a scientist finds it for you, usually within the hour.
Last updated 14 November 2026
€1,886 sits in the middle range pumps liquid and here. The middle half of the 365 with a price runs from €650 to €5,463.
