Click here to see the used and refurbished NuAire NU-543-400 from American Instrument Exchange.

We recently received a NuAire LabGard NU-543-400 biosafety cabinet in stock for the first time and, upon initial inspection, we’re very pleased with this model.

Like all Class II, Type A2 biosafety cabinets this BSC protects both personnel and product from airborne biological or particulate chemical agents. Air is drawn in through the front aperture, which provides operator protection (Figure 3). The inflow air mixes with the downflow air as it enters the front intake grille and then passes through the plenum where the air splits. Approximately 60% to 70% of the air is recycled and pushed back into the BSC work area through the downflow HEPA filter, and the remaining 30% to 40% is exhausted through the exhaust HEPA filter.

Aside from the updated visual aesthetic the NuAire NU-543-400 also incorporates an ergonomically angled glass sash that allows for better viewing angles of the worksurface and a shorter reach into the work zone, thus bringing work materials closer to the user and relieving stress on the arms, back, and neck, as well as an armrest that eliminates cold conduction on forearms and associated tendon stress. The recessed airfoil allows technicians to use the armrest without fear of inhibiting airflow. Additionally, the recessed work-tray has a spill lip that both makes reaching the work surface more comfortable and allows for easy clean up.

As with any biosafety cabinet, the core of the NuAire NU-543-400 is the single-piece construction creating a monolithic shell without rivets or sealants to prevent any leaks or fissures. A single piece of stainless-steel wrap is bent to create the cabinet’s walls while more sheets are seam welded to make up the bottom and top of the working area. A second sheet is then bent and inserted and welded to create the interior working area walls.

We’re also fans for the electronic control system. This is the latest technology from NuAire and called the FlowGard microprocessor design. It integrates a dual thermistor airflow sensor to monitor airflow and alert users to any airflow irregularities.

Our technicians test each bio safety cabinet and make sure that the controls and blower motor work properly. Unless otherwise specified all biosafety cabinets come with new HEPA filters installed by our technicians at our facility prior to shipment. Our testing procedure includes all the elements of a bio safety cabinet certification in order to ensure that the unit will pass certification once it is at your site.

So if you’re in the market for a biosafety cabinet and are looking to save some money, please give us a call or email today about the NuAire NU-543-400. Our prices are typically 40% – 60% lower than comparable new units and all of our equipment come fully tested to manufacturer spec and with a warranty. Thanks!

American Instrument Exchange has been a reliable source for used laboratory and scientific equipment for over 50 years, buying and selling equipment since 1969. Our surplus lab equipment is reconditioned for many types of laboratories, including biotech, biomedical, medical research, chemical, pharmaceutical, and university and hospital research laboratories. All lab equipment listed on our website is in stock and ships from our 30,000 square foot warehouse in Massachusetts. Our facilities include a fully equipped shop with highly trained technicians who thoroughly test each instrument before it reaches your laboratory. Please visit our website at https://www.americaninstrument.com/.

Click here to see used and refurbished rotary evaporators from American Instrument Exchange.

We’ve gotten a few calls in the last couple of weeks asking for information on the difference between Buchi R-215 and Buchi R-210 rotary evaporators, so we figured we’d write a blog post highlighting some of the similarities and differences.

First and foremost, both are great products and quality evaporators. Buchi has been the go-to brand name for rotary evaporators for decades, and with good reason: since 1939 the company has offer high-quality, dependable products for use in R&D, quality control, and production in a wide variety of industries. Buchi rolled out the first commercially available “rotavapor” in the late 1950’s and still produces an array of rotary evaporators, from small benchtop units to huge 50L production models.

That being said one big functional difference between these two models to keep in mind is that the Buchi R-215 tower has a built in screen that displays vapor temperature and rotation speed. While this isn’t strictly necessary or required for operation it is a handy feature to have, especially for applications requiring stricter parameters.

Besides that there’s really no difference between the two units. Both models can be paired with either the Buchi V-850 or Buchi V-855 vacuum controllers for optimal process control. Both the V-850 and V-855 allow for control and regulation of the vacuum and have large digital displays. We recommend using these along with a V-700 or V-710 vacuum pump as part of an R-210 or R-215 system.

So if you’re in the market for either a Buchi R-210 or a Buchi R-215 rotary evaporator please give us a call or email today. Thanks!

American Instrument Exchange has been a reliable source for used laboratory and scientific equipment for over 50 years, buying and selling equipment since 1969. Our surplus lab equipment is reconditioned for many types of laboratories, including biotech, biomedical, medical research, chemical, pharmaceutical, and university and hospital research laboratories. All lab equipment listed on our website is in stock and ships from our 30,000 square foot warehouse in Massachusetts. Our facilities include a fully equipped shop with highly trained technicians who thoroughly test each instrument before it reaches your laboratory. Please visit our website at https://www.americaninstrument.com/.