Bscs are designed to be connected to the laboratory exhaust system in one of two ways.
Biosafety cabinet biosafety level 3 laboratory design.
Width international models biohazard cabinets with advanced ergonomic design excel in user comfort and functionality.
The assignment of a biosafety level to a particular work process is made through a protocol driven risk assessment.
Date laboratory location responsible individual queries are based on the biosafety level 3 section of the biosafety in microbiological and biomedical laboratories 5th edition 2007 circle the response that best describes the laboratory in which work will be performed.
Please see biosafety level 3 guidelines for bsl3 laboratories.
Thimble or canopy connection with partial recirculation to the laboratory space e g for class ii type.
The facility must be tested for verification that the design and operational parameters have been.
Preferably this is a class ii biosafety cabinet or equivalent containment device for work with agents and an autoclave or other suitable method for decontamination within the lab.
Biosafety level 3 bsl 3 is the recommended containment for work with agents or toxins that may cause serious or potentially fatal disease through inhalation exposure.
Facilities as basic biosafety level 1 basic biosafety level 2 containment biosafety level 3 and maximum containment biosafety level 4.
Supply air must be provided in such a manner that prevents positive pressurization of the cabinet.
A readily available eyewash station is needed.
The biosafety officer in collaboration with the institutional biosafety committee must approve the location and design of any bsl 3 facility and has final authority to authorize the commencement of bsl 3 work the biosafety level 3 facility design and operational procedures must be documented.
Basic laboratory design for biosafety levels 1 and 2.
Laboratories covers all design requirements for biosafety level 1 laboratory work areas.
For more information on other aspects of the biosafety levels please see the rest of the biosafety section for a general overview.
Biosafety level 1 biosafety level 4 facilities.
Laboratory containment for human pathogens.
Table 1 describes the risk groups table 2 relates them to the laboratory designations and table 3 summarizes the requirements at the four biosafety levels.
Work at bsl 3 requires enhanced facility design operational controls and special practices which will be outlined in this section.
Class ii a2 biosafety cabinets 3 ft.
Hepa filtered exhaust air from a class ii bsc can be safely recirculation back into the laboratory environment if the cabinet is tested and certified at least annually and operated according to manufacturer s recommendations.
Selfclosing lockable doors and biohazard warning signs are also required at all access points.
