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Appl Environ Microbiol. 1968 December; 16(12): 1895-1900
Copyright © 1968 American Society for Microbiology. All Rights Reserved.

Biohazard Hood to Prevent Infection During Microbiological Procedures

Institute for Medical Research, Camden, New Jersey 08103

ABSTRACT

A microbiological hood was designed to reduce the danger of airborne infection of laboratory workers. The hood uses absolute filters to deliver sterile air in a laminar flow to the work area. An air curtain across the hood opening permits easy access but separates the worker from aerosols produced in the hood, and protects material inside the hood from contamination by room air. Tests with bacterial and viral aerosols showed that the air curtain is at least 99.96% effective in preventing airborne particles from entering the work area.