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Diaphragm vacuum pump N920KT.29.18 with 20 l/min flow, 2 mbar vacuum, 50 kPa pressure, ideal for biotechnology
The KNF N920KT.29.18 diaphragm vacuum pump (Model 4355) delivers a vacuum level of 2 mbar and exhaust flow of 20 liters per minute, with a maximum pressure of 50 kPa. Designed for laboratory applications, this compact pump measures 324 mm wide, 158 mm deep, and 226 mm high, fitting well into bioprocessing and molecular diagnostics setups that require precise vacuum control. It features a 9 mm connection diameter suitable for various laboratory tubing systems. The pump operates on an input power of AC100–230 V, drawing 1.35 A at 135 W, ensuring versatile electrical compatibility. Weighing 8.6 kg, it offers portability for biotechnology workflows involving gene editing, synthetic biology, or biopharmaceutical production pipelines. This unit is used and sold as-is, with potential deviations from original new performance. It is essential for applications requiring reliable vacuum generation in bioscience laboratories.
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With a service contract, ten to fifteen years is normal for most benchtop instruments. Detectors and pumps are the parts that wear first.
Yes. Every verified supplier states which service partners cover the instrument, and we list that 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.
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Last updated 19 October 2026
