Technology Overview

A VACUU•LAN® lab vacuum network is a modern, modular alternative to central lab vacuum system supply, water jet aspiration vacuum, and individual vacuum pumps dedicated to each lab vacuum application. With a VACUU•LAN® vacuum network, a compact, dry vacuum pump supports up to 20 vacuum workstations in a lab. The vacuum pump is small enough to fit under a lab bench or fume hood, and quiet enough that it operates virtually unnoticed. The pumps are oil-free diaphragm vacuum pumps, so there is no oil to change or protect with cold-traps, and the flow path is made entirely of fluoropolymers for unsurpassed chemical resistance. Other systems require much more demanding service measures to keep the lab vacuum system operational (See: Working on Contaminated Lab Vacuum Pumps and Systems).

VACUU•LAN® networks can be configured for economy (when simple lab vacuum applications like filtration and aspiration are the principal uses), or for performance and productivity (such as when deeper, electronically controlled vacuum is needed for critical evaporative operations).

The VACUU•LAN® network – What it’s not

A VACUU•LAN® network is not just a small local pump attached to conventional copper tubing and vacuum turrets within a lab. Such an approach actually leads to performance that is worse than that of a central vacuum system; the inadequate flow rates increase the risk of interference and cross-contamination between adjacent applications. That’s because scientific central vacuum systems rely on high pumping speeds and the large hold-up volume of a system with large diameter copper or stainless tubing in an attempt to overcome the inherent instability of a vacuum system with uncontrolled vacuum turrets. A lab pump attached to such an uncontrolled tubing network just doesn’t have the pumping speed to support several applications at once.

In contrast, a VACUU•LAN® lab vacuum network is plumbed with chemical-resistant PTFE tubing and specially designed valves that respond quickly to the variability in the local network; they briefly isolate individual applications from the network, and then re-connect them when network vacuum is restored. This operating approach allows the VACUUBRAND server pump to provide high quality vacuum (down to 2 mbar/1.5 Torr) to several applications at once with a small, local vacuum pump, while protecting each application from the sudden changes in the network vacuum levels so typical of central lab vacuum system supply. Additional informaiton on lab vacuum system design can be found here.

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