Stainless Steel Vertical Laminar Flow Cabinet

What is the Stainless Steel Vertical Laminar Flow Cabinet?

A stainless steel vertical laminar flow cabinet uses 304 or 316L construction for aseptic and GMP processes. Its cleanable surfaces and downward flow suit sterile handling and regulated inspection with documented materials.

Overview

The cabinet is fabricated in 304 or 316L stainless steel with welded, crevice-free joints and a coved work surface for cleaning and disinfection. HEPA H14 filtered air descends at 0.3–0.5 m/s over the work zone, giving ISO 5 at the surface and sweeping particles away from open vessels. A prefilter protects the HEPA stage and a pressure gauge shows loading. The exhaust may be ducted or recirculated to suit the room, and the finish can be brushed or electro-polished. Material certificates and filter test reports are typically supplied. The cabinet suits aseptic assembly, vial and device handling, sterile inspection and other regulated work where cleanable surfaces, downward product protection and audit-ready documentation are required.

How does it work?

In a vertical laminar flow cabinet, room air is drawn through a prefilter and a HEPA filter located at the top, and a plenum and diffuser distribute it as a unidirectional stream that descends at 0.3–0.5 m/s over the work zone. Particles shed by the work are swept downward and away rather than towards the operator, and because the flow is vertical, taller items disturb it less than in a horizontal cabinet. Air leaves at the front of the work area and may be exhausted to the room or ducted, and some models recirculate most of the air. The supply filter removes at least 99.97 % of 0.3 µm particles for HEPA and 99.999 % for ULPA, giving ISO 5 or better at the work surface. Face velocity, filter integrity and particle counts are verified, and the cabinet must be sited away from draughts that could break the laminar stream.

What are the key features?

• 304 or 316L stainless steel construction
• Welded, crevice-free, coved work surface
• Vertical HEPA H14 supply at 0.3–0.5 m/s
• ISO 5 cleanliness at the work surface
• Ducted or recirculating exhaust option
• Material certificates and filter test reports

What are the technical specifications?

A typical stainless steel vertical laminar flow cabinet configuration offers flow direction of Vertical, top to work surface, body material of 304 or 316L stainless steel, filter class of HEPA H14, ≥ 99.97 % at 0.3 µm, downflow velocity of 0.3–0.5 m/s, cleanliness of ISO 5 at work surface and finish of Brushed or electro-polished. Values are indicative of the product class; the exact figures for each configuration are confirmed on the quotation and the calibration documents supplied with the instrument.

Which applications is it used for?

The Stainless Steel Vertical Laminar Flow Cabinet is used in aseptic assembly, vial and device handling, sterile inspection and regulated pharmaceutical work. Across the wider Vertical Laminar Flow class, laboratories also deploy it for cell culture and sterile handling, electronics and semiconductor assembly and media preparation and plating.

Which standards and certifications apply?

Relevant standards and methods include ISO 14644-1 (cleanroom classification), ISO 14644-3 (test methods), IEST-RP-CC002 (unidirectional flow clean-air devices), EN 1822 (HEPA and ULPA filters), EU GMP Annex 1 (sterile manufacturing) and GB 50073 (cleanroom design code). Certification candidates for this model are CE and ISO 9001 manufacturing; each is to be confirmed for the specific configuration before shipment, and certificates are supplied only where they have been issued.

Site the cabinet away from doors, air diffusers and people traffic, since draughts above about 0.2 m/s disturb the downward stream. Verify filter integrity and face velocity at installation and at least annually, and change prefilters every 3–6 months. Place tall items so they do not block the diffuser, and keep the front opening clear so air can exit. Clean surfaces with compatible agents and avoid generating aerosols that load the filter. The cabinet protects the work rather than the operator, so do not use it for hazardous aerosols or chemical vapour. Record requalification results, and confirm the recirculated or ducted exhaust path meets room requirements.

How do I select the right Stainless Steel Vertical Laminar Flow Cabinet?

Choose stainless steel for aseptic or GMP work needing cleanable surfaces, downward protection and documented materials. Confirm finish, exhaust and requalification records. Add filter test reports to the order. RFQ: grade, finish, width, exhaust, cleanliness target and documentation needs.

How does it compare with other Vertical Laminar Flow variants?

Choose vertical laminar flow when the work is tall, when the cabinet contains a central obstruction such as a jig, or when downward flow is preferred so that particles do not travel towards the operator. Decide whether the cabinet recirculates, exhausts to the room or is ducted, and select HEPA H14 for ISO 5 or ULPA for ISO 4 or better. Match internal height and working depth to the equipment, and consider a sash or partial front for increased operator comfort. For regulated or aseptic work, choose stainless steel with cleanable surfaces and documentation. Confirm face velocity and cleanliness at commissioning. Vertical designs are often preferred in cell culture and sterile handling where a downward draught over open vessels reduces contamination from above.