Purair Laminar Flow Cabinets, vertical and horizontal flow cabinets. Class II A2 Biosafety Cabinet

The World's most practical selection of benchtop laminar flow cabinets providing reliable protection for samples and work processes for a mulitude of applications.

Introduction

Air Science Purair Laminar Flow Cabinets are a series of high efficiency produts designed to protect equipment and other contents of the work zone from particulates, for applications sensitive to such contamination. It is ideally suited for use with non-hazardous contaminants and when flexible access to the equipment in the work zone is desired. At the heart of the Purair Laminar Flow Cabinet product line is the Air Science Multiplex ULPA Filtration technology that creates a clean work environment over a wide range of applications.

Typical Applications

Uses include applications where there is no generation of biohazardous materials and operator protection is not required. Mycology and food microbiology, Plant and mammalian cell culture, Clinical pharmacy and hospital use, Clean rooms, Semiconductor assembly, Pharmaceutical, Aerospace, Medical device assemble, Research Laboratories.

Vertical and Horizontal Airflow

Performance of Purair vertical and horizontal flow cabinets is the same and the choice is largely a matter of user preference.

Horizontal flow cabinets create less turbulence at the work surface, as the airflow does not directly impinge upon it but rather is smoothly drawn across it. The airflow on the Purair vertical flow cabinets directly strikes the work surface. However, to minimize this effect, vertical laminar flow cabinets are manufactured with rear wall perforations to reduce turbulence by removing a small amount of air at the rear of the cabinet. Turbulence is a problem only where it is excessive.

The design of vertical flow cabinets is customized more easily at a lower cost as required.

Airflow in a horizontal flow cabinet exits directly towards the user, whereas the airlow in a vertical flow cabinet strikes the work surface first and exits towards the user indirectly. It should be noted, neither style laminar flow cabinet offers any operator protection.

Large or tall equipment in a horizontal flow cabinet will interrupt the airflow more than in a vertial flow cabinet. This may create more turbulence an "dead" spots where airflow is lower than elsewhere. Vertical flow cabinets are not so impacted by large equipment.

In vertical flow cabinets, the ULPA filter is mounted above the worksurface. This provides a larger work space, both taller and deeper, that may be appropriate for large equipment in the work zone.