Bluezone by Middleby. Science that keeps your spaces safer and your foods fresher.  

Bluezone by Middleby is air purification that finally works. Bluezone uses the  precise balance of ultraviolet-enhanced oxidation between 185nm and 254nm to chemically destroy airborne contaminants, such as odors, mold, bacteria, and virus. Bluezone does not rely on mechanical filtration, instead Bluezone scientists have maximized the flow rates and residence time though the Bluezone unit in order to get kill rates between 99.9% and 99.9995% depending on contaminant and unit type. 

Diagram of how viruses and bacteria enter the Bluezone 450 UV air filtration unit and exit purified

Bluezone by Middleby

Viral Kill

The Bluezone by Middleby Viral Kill models utilize enhanced ultraviolet irradiation around 254nm that is optimized for destroying viruses in occupied spaces. The Viral Kill units ultraviolet radiation coupled with enhanced residence time and flowrate through Bluezone’s reaction chamber, results in a log five kill rate for the MS2 (SARS-CoV-2 Surrogate) virus. The Viral Kill unit also features a room temperature oxidation catalyst to convert VOCs in to CO2 and H2O. 

Graph showing net log reduction vs time

Bluezone by Middleby

Food Preservation

The Bluezone by Middleby Food Preservation units utilize a balance of ultraviolet radiation at 185nm and 254nm to kill airborne contaminants to enhance the shelf-life of perishable food items. The Food Preservation units are designed to be installed in full-size walk-ins refrigeration and coolers. To achieve maximum shelf-life, Bluezone attacks airborne contaminants differently. Some airborne contaminants such as ethylene are converted to H2O and CO2 via an oxidation process, while others such as fungus-like powdery mildew or botrytis are killed instantly with Bluezone’s self-contained ultraviolet light and ozone.*

Read about how Bluezone UV technology preserves strawberries in this informative case study.

*Bluezone is CARB certified for ozone emissions: ozone is kept inside the Bluezone reaction chamber. 

Illustration of UV light destroying viruses