| |
| | Labconco: NSF Standard Number 49 |
 | | The NSF Standard Number 49, entitled Class II (Laminar Flow) Biosafety Cabinetry, established minimum materials, design, construction and performance requirements for Class II biohazard cabinets including the quality control tests which the manufacturer must perform on every unit, and the certification tests to be performed in the field. |
 | | In addition, its policy established requirements for initial testing and periodic retesting of cabinets by the NSF International Laboratory in Ann Arbor, Michigan, and annual unannounced audits of the manufacturer’s facility. |
 | | Typically, most manufacturers perform biological challenge tests while their cabinets are in the prototype stage of development, and periodically during production, to ensure that the unit protects personnel, environment and product. |
| www.labconco.com /company/standards_certs/nfs_standard_49.shtml (483 words) |
|