Click here to see the used and refurbished Thermo 3911 at American Instrument Exchange.

Over the years we’ve worked with a lot of different types of environmental chambers. The Thermo 3911 is near the top of our list in terms of reliability, design, and ease of use.

Humidity in environmental chambers can be generated in a variety of ways. The most basic method is to place a water pan at the bottom of the chamber and let high heat create steam – this is how it’s done in the Thermo Forma 3110 and other similar cell culture incubators. Years ago some models utilized a water sprayer and fin heater to generate steam which was effective but quickly resulted in corrosion of the heater. These days, more advanced models employ ultrasonic humification systems.

A steam generator with an initial fill of about 1 quart of water controls the relative humidity in the chamber of the Thermo Forma 3911 and can be set anywhere from ambient to 95% at 37°C and above. Temperature is controlled by a front mounted digital, dual LED display with programmability for temperature ramp and soak up to 24 steps.

The glass door allows you to visually monitor the samples and contents of the chamber without compromising the internal temperature or humidity settings.

So if you’re looking for an environmental chamber please consider a used and refurbished Thermo Forma 3911 from American Instrument Exchange. You can find more specifications and details on our website along with pictures of the units we have in stock and available. 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/.

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