Stainless Steel GMP Clean Bench

What is the Stainless Steel GMP Clean Bench?

A stainless steel GMP clean bench uses 304 or 316L construction with cleanable surfaces for regulated aseptic work. It provides product protection with documentation to support qualification and audit readiness in regulated facilities.

Overview

The bench is fabricated in 304 or 316L stainless steel with welded, crevice-free joints and a coved work surface, so it can be cleaned and validated to GMP expectations. HEPA H14 filtered air crosses the work surface at 0.3–0.5 m/s, giving ISO 5 at the work point, and the exhaust may be ducted or recirculated according to the room. The finish can be brushed or electro-polished, and a pressure gauge shows filter loading. Material certificates and filter test reports are typically supplied to support equipment qualification. The bench suits aseptic assembly, device packaging, sterile inspection and other regulated processes requiring cleanable surfaces and audit-ready records, while remembering that it protects the work and not the operator.

How does it work?

A clean bench supplies filtered air in one direction across an open work surface, so particles generated by the work or carried in the room are swept away from the sample. Room air passes a prefilter and then a HEPA filter rated at least 99.97 % efficient at 0.3 µm, or a ULPA filter at 99.999 %, and a diffuser makes the stream uniform at 0.3–0.5 m/s. Horizontal designs flow from the back of the bench to the front, while vertical designs descend from the top. The open front gives good access but no operator protection, so clean benches are used only for work that produces no hazardous aerosol or chemical vapour. The work zone can reach ISO 5 in a suitable room. Filter loading is shown by pressure, and airflow and filter integrity must be verified, because draughts and obstructions disturb the laminar stream.

What are the key features?

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

What are the technical specifications?

A typical stainless steel gmp clean bench configuration offers flow direction of Horizontal or vertical, body material of 304 or 316L stainless steel, filter class of HEPA H14, ≥ 99.97 % at 0.3 µm, face 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 GMP Clean Bench is used in aseptic assembly, medical-device packaging, sterile inspection and regulated pharmaceutical work. Across the wider Clean Benches class, laboratories also deploy it for aseptic assembly and inspection, media preparation and plating and electronics and optics work.

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 bench away from doors, air diffusers and traffic, because draughts above about 0.2 m/s break the laminar stream. Verify filter integrity and face velocity at installation and at least annually, changing prefilters every 3–6 months. Keep the work surface free of large items, place objects to the side rather than in front of the filter face, and do not block the air exit. Clean with compatible agents, and avoid aerosols that would load the filter. Never use a clean bench for hazardous aerosols or volatile chemicals, since the open front offers no protection. Record requalification and filter changes, and confirm that the recirculated or ducted exhaust suits the room and any local rules.

How do I select the right Stainless Steel GMP Clean Bench?

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

How does it compare with other Clean Benches variants?

Choose the flow direction first: horizontal for flat work needing clear access, vertical for tall items and where downward flow is preferred. Then decide the exhaust arrangement: ducted where exhaust must leave the room, recirculating where no duct is available and the work is clean. Select the construction: powder-coated steel for general use, and stainless steel for aseptic, GMP or high-humidity environments with cleanable surfaces and documentation. Choose filter class for the cleanliness target, HEPA H14 for ISO 5 and ULPA for ISO 4 or better, and match width and working height to the equipment. Confirm the bench does not need to protect the operator, and if it does, specify a biosafety cabinet or fume hood instead. Verify face velocity, filter integrity and particle counts at commissioning, and plan requalification.