Basic Documentation

Table Of Contents
Laboratory Ventilation Codes and Standards
Siemens Industry, Inc. 32
Topic Requirement(s) Commentary
Auxiliary Air
(Continued)
NOTE: Consideration should be given to preconditioning and filtering auxiliary air.
Auxiliary air fume hoods shall also conform to the following requirements:
Provide safe capture and efficient removal of fumes from the hood when
operated at air ratios specified by the manufacturer.
Capture the percentage of auxiliary air specified by the manufacturer when
operated with the sash(es) open or closed.
Capture, contain and carry away fumes generated in the work area when
operated at a condition of imbalance between the auxiliary air and room air as
specified by the manufacturers.
Function in accordance with the performance characteristics listed above when
tested by appropriate evaluation procedures.
Never pressurize the hood chamber with auxiliary air.
The manufacturers shall include auxiliary air static pressure data for all standard
catalog models.