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KNF Laboport N 840.3 FT.18 Diaphragm Vacuum Pump for Corrosive Gases

From€1,796excl. VAT

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Pump pressure max. bar
8
Pump pressure max. lt/min
34
Miscellaneous
IP 44
Absorption
245W
Weight kg
12.6
All 8 specifications
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Specifications 8

Brands
KNF
New/Used
New
Pump pressure max. bar
8
Pump pressure max. lt/min
34
Miscellaneous
IP 44
Absorption
245W
Weight kg
12.6
Power supply
230V; 50 Hz

Product description

Oil-free diaphragm vacuum pump with PTFE components, 34 L/min flow, 8 mbar final vacuum, ideal for corrosive vapors.

The KNF Laboport N 840.3 FT.18 is a chemically resistant diaphragm vacuum pump specifically designed for handling highly corrosive gases and vapors in laboratory environments. Its oil-free, contamination-free operation ensures reliable and clean vacuum generation essential for molecular diagnostics, bioprocessing workflows, and synthetic biology research.

  • 100% oil-free design prevents sample contamination, critical in biotechnology and chemical analyses.
  • Maximum flow rate: 34 L/min, providing efficient vacuum generation for applications such as vacuum filtration, rotary evaporation, and vacuum concentration in biotech labs.
  • Final vacuum of 8 mbar (absolute) supports sensitive processes involving aggressive solvents and chemical vapor extraction.
  • Constructed with PTFE pump head, PTFE-coated diaphragm, and FFPM valves offering excellent chemical resistance to aggressive and corrosive vapors common in biomanufacturing and molecular biology workflows.
  • Quiet and reliable continuous operation supports long-duration experiments and bioprocessing setups.
  • Compact benchtop design (weight 12.6 kg) enables easy integration on laboratory benches with minimal maintenance needs due to membrane technology.
  • Suitable for laboratory temperature ranges (5 – 40 °C) with standard hose connections (Ø 10 mm inside).

This vacuum pump is widely adopted in biotechnology, pharmaceutical research, and chemical analysis where contamination-free vacuum performance and durability against aggressive chemical environments are paramount. It is essential for workflows in molecular cloning, live-cell imaging preparatory steps, and other applications demanding contamination-free vacuum conditions.

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Frequently asked questions

How long does laboratory equipment typically last?

With a service contract, ten to fifteen years is normal for most benchtop instruments. Detectors and pumps are the parts that wear first.

Can I get service for older equipment?

Often, yes. Verified suppliers frequently work with service partners converting the instrument. If applicable, we can list servicing options alongside the offer.

Where can I buy parts?

Ask a scientist through the request button. Parts are often available even when the instrument itself is discontinued.

What is the typical lead time for refurbished equipment?

Two to six weeks, depending on refurbishment scope and whether calibration is included.

Does laboratory equipment ship internationally?

We ship to 38 countries. Crating and customs handling are quoted with the instrument.

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Last updated 5 November 2026