For security reasons, you will be logged out in 4 minutesCannot be added!Your basket contains a blocked quote and must be finalised before you can order other items.Add to basket...Item added to basket
Express
orderBasket0
KnowledgeCatalogs
Services & supportInfo & Contact

KNF : Quelles pumps for creating the vacuum and transferring the fluids cleanly ?

KNF is an international specialist in diaphragm pumps for gases, vapours and liquids. Its oil-free vacuum and controlled transfer solutions are widely used in life sciences, quality control and R&D laboratories, from environmental testing to food and beverage, pharmaceutical and chemical applications. Using highly chemical-resistant materials (PTFE, FFKM, PVDF) and engineering recognised for reliability, KNF provides LABOPORT pumps and SIMDOS dosing systems that are high-performance, low-noise and easy to integrate. Dutscher distributes this equipment for demanding, reproducible workflows.

A pioneer in diaphragm vacuum technology since 1946

Founded in 1946 in Freiburg im Breisgau, the company established by Kurt Neuberger — whose initials live on in KNF — has made diaphragm technology its speciality. Over the decades, KNF turned the diaphragm pump into the industry standard for clean, oil-free vacuum and reliable transfer, expanding its footprint from Germany and Switzerland to the United States and Asia through subsidiaries and production sites. As an independent, family-owned group, KNF combines customer proximity with innovation, backed by a strong engineering culture, close attention to laboratory needs, and a constant focus on product longevity. This trajectory is reflected in modular ranges, benchmark chemical compatibility and services that support teams over the long term.

Expertise and areas of specialism

In the laboratory, KNF is synonymous with clean vacuum and precise pumping thanks to diaphragm technology: oil-free operation, reduced maintenance, no contamination, and excellent performance with corrosive gases. The choice of materials (PTFE, PTFE-coated, FFKM, PVDF) ensures broad chemical compatibility, essential for analytical chemistry, QC laboratories and R&D.

The LABOPORT pumps cover everyday tasks such as vacuum filtration, desiccation, rotary evaporation, gel drying, vacuum ovens or gentle degassing. Quiet and compact, they deliver a stable, controllable vacuum with optimised energy efficiency and versions specified for aggressive vapours. On the liquids side, the SIMDOS dosing solutions provide controlled, pulsed transfer and high reproducibility with solvents, acids or bases — an advantage for formulation, reactor control, instrument feed and sample preparation.

For our markets, KNF stands out with pumps and systems that are easy to control (speed control, interfaces), accessible maintenance kits and a design focused on longevity and safety. European manufacturing and process control are underpinned by quality frameworks such as ISO 9001, with products meeting CE requirements and RoHS/REACH directives. The result: a reliable, scalable solution ready to integrate into your methods, from biology to analytical chemistry.

KNF products supplied by Dutscher

Frequently asked questions about the KNF brand

What sets a KNF diaphragm pump apart?
Oil-free operation, low maintenance, high chemical compatibility and a stable vacuum. Ideal for filtration, evaporation and clean transfers.

Are KNF products suitable for aggressive solvents?
Yes — thanks to materials such as PTFE, FFKM or PVDF. Select the version according to the medium and temperature; refer to the performance curves and our guidance.

Where are KNF pumps manufactured?
Production is predominantly European (Germany, Switzerland) and complemented by global sites. Traceability and quality control are ensured in accordance with ISO 9001.

What warranties and services are offered?
Warranty terms vary by model and country. KNF supplies spare parts/maintenance kits, and Dutscher provides advice, commissioning and after-sales support for reliable, long-term operation.

Do KNF pumps comply with standards?
CE-marked products, designed under an ISO 9001 quality system. RoHS/REACH compliance depending on the reference. Please consult the technical documentation.

How do I choose the right model?
Define the required ultimate vacuum or flow rate, the nature of the medium, material compatibility and the application (filtration, evaporation, dosing). Dutscher will guide you to the best fit.