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  1. Home
  2. Machine elements and parts
  3. ケーエヌエフ・ジャパン KNF JAPAN
  4. The optimal vacuum pump for rotary evaporators.
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  • Mar 03, 2025
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Mar 03, 2025

The optimal vacuum pump for rotary evaporators.

ケーエヌエフ・ジャパン ケーエヌエフ・ジャパン KNF JAPAN
Distillation tests are conducted regularly in the chemistry laboratory. However, which vacuum pump is best suited for the rotary evaporator? Also, is the pump currently in use the correct one? You can find the optimal pump in four simple steps.
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ロータリーエバポレータ―に最適な真空ポンプ.pdf[561450]

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Lab_product_N_820_3FT_18side_2020_1200px_900px.jpg

LabPort Series SD Series

Ideal for suctioning humid gases.

N820/N840/N842/N860 

  • Special Pump

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N810.jpg

LabPort Series

Europe Explosion Protection Plan (ATEX) compliant

N810(Ex)/N820(Ex)/N840(Ex)

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OEM_Product_N_920_APDC-B_side_2020_1200px_900px.jpg

Labport Series High Vacuum Type

This is a high vacuum pump that achieves 100% oil-free operation.

N920/N950 

  • Special Pump

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sc920_frontview_72dpirgb_knf_201506 (2).jpg

Solvent recovery and high vacuum dry vacuum pump system

It is particularly optimal for rotary evaporators with a vacuum controller.

SC920G 

  • Special Pump

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20191025_laboport_n96_72dpi_rgb.jpg

Chemical-resistant diaphragm vacuum pump

This is a compact and affordable oil-free diaphragm vacuum pump. It is equipped with a function that allows manual adjustment of the exhaust speed as desired.

LABOPORT N96.18

  • Special Pump

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20191127_Laboport_Gruppenbild_72dpi_RGB.jpg

Chemical-resistant diaphragm pump NEW LABOPORT series

Streamlined body based on ergonomics, adjustable exhaust speed. Expandable features such as a solvent recovery type with added separator, cooling pipe, and vacuum controller.

N 96.18 N 820 G / SC 820 G / SH 820 G / SR 820 G N 840 G / SC 840 G / SH 840 G / SR 820 G N 920 G

  • Special Pump

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N840_3FT_18_Sideview_72dpiRGB_KNF_201506.jpg

LABOPORT Series Vacuum Pump for Laboratory Use

Best-selling laboratory vacuum pumps, tabletop vacuum pumps, full Teflon pumps, self-drain valve types, and a wide range of other options.

N 86 / N 811 Series N 816 / N 838 / N 938 Series SC920G N 810 (Ex) / N 820 (Ex) / N 840 (Ex) N 820.3FT.40 / N 840.3FT.40 / N 842.3FT.40 N 920 / N 950 Series

  • Special Pump

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Machine elements and parts
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Please let us know your concerns regarding leaks. We may have some suggestions for you. Leak tests, leakage tests, leak inspections, leak detection, container integrity tests, packaging integrity tests...

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Fukuda Corporation has been pursuing leak detection for 60 years and is dedicated to advancing the future of leak testing. 【 Supporting Various Leak Tests: Air Leak Test / Gas Leak Test (Hydrogen Gas, Helium Gas) 】 We develop, manufacture, and sell leak testing equipment to inspect airtightness and sealing performance. We will propose suitable testers and devices for each inspection target. 【 Target Industries and Examples of Inspection Targets 】 - Automotive Industry: Engines, FC components, valves and piping, various parts - Electronic Components Industry: Smartphones, keyless switches, various small sensors - Pharmaceuticals / Food / Cosmetics Industry: Bottle containers, syringes, vials, eye drop containers, pillow packaging, PTP packaging We will propose the most suitable leak testers for each industry. 【 ISO Certification 】JIS Q 9001:2015 (ISO 9001:2015)

Aug 21, 2026

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Fukuda's Technology Column

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This is a collection of links to Fukuda's technical columns. It covers various topics related to leak tests and more... Please check the related links for more information.

Aug 21, 2026

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Hyper CLT flooring panel

Utilized for temporary roads on slopes | Wood CLT "Hyper CLT Paving Slabs"

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In civil engineering sites such as mountainous areas and construction sites, it may be necessary to use wooden boards on slopes or inclined access roads. Hyper CLT boards are civil engineering materials utilizing wood CLT, which can be laid not only on flat ground but also on sloped terrain. They can be used for temporary roads, access routes, heavy machinery entry paths, and measures against muddy conditions, creating a driving environment that takes advantage of the unique surface characteristics of wood. The 5×10 board weighs approximately 230 kg, and the 5×20 board weighs about 460 kg, making them lightweight and easy to install and remove even with small machinery, which is a notable feature for maneuverability in narrow sites. This wooden board is registered as a technology under the Ministry of Land, Infrastructure, Transport and Tourism's NETIS system as "TH-250021-A," and can also be utilized for safety measures and innovative ideas in public works.

Aug 21, 2026

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Metal Crack Repair: MS Method for Repairing Cracks and Fractures in Machinery Equipment

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Metal cracks are one of the concerns in equipment maintenance operations. Repairs using conventional welding methods can alter the base material around the crack due to heat, leading to residual stress and deformation, which always carries the risk of "crack recurrence" or "secondary damage." Hinode Waterworks Equipment Co., Ltd.'s "Mechanical Stitching Method" is a new technique that allows for the repair of metal cracks without applying heat. By using special bolts and reinforcement plates, the crack is physically removed without affecting the base material with heat. Repairs can be performed even in environments where open flames cannot be used. Since no heat is applied, the disassembly of equipment is minimized. For more details, please contact us or download the catalog.

Aug 21, 2026

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Casting sand mold 3D printer prototype production

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  • COMPANY

● The production time for cast prototypes can be shortened! Since model making is not required, the production time for prototypes, which previously took about a month, can be significantly reduced. ● Model costs can be reduced! By directly producing sand molds from 3D data, there is no need for model production costs. If changes to the model are necessary, they can be addressed by modifying the 3D data. ● Similar products with different shapes and dimensions can be prototyped simultaneously! Different products, such as similar shapes or varying dimensions, can be molded at the same time in one molding process. This allows for the verification of multiple types in a short period.

Aug 21, 2026

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