Sterile Garment Storage Cabinet with Positive Pressure Purge

What is the Sterile Garment Storage Cabinet with Positive Pressure Purge?

A sterile garment storage cabinet holds pre-sterilized garments under filtered, positive-pressure air, protecting them from contamination until use. It is used in ISO 5–7 gowning for Grade A and B aseptic areas.

Overview

The cabinet uses a dedicated HEPA H14 fan filter unit and a sealed stainless steel enclosure with gasketed glass doors. Positive pressure of 15–30 Pa relative to the room is held by a controller with pressure sensor and alarm. Airflow enters the top and flows over sterile garments to bottom exhaust grilles, keeping an ISO 5 environment at rest. Interior surfaces are electropolished 316L stainless steel for cleaning and compatibility with sporicidal agents. Garments remain in their sterile packaging or on clean hangers. The cabinet includes door-open alarms, filter-change warnings and event logging for GMP records. Power is 220 V at 150–300 W.

How does it work?

A garment cabinet provides enclosed storage with controlled airflow so that garments remain dry and particle-free. Basic units have stainless steel or powder-coated steel shelves and hangers with louvred or perforated doors. Ventilated versions draw room air through a prefilter and HEPA filter and circulate it over the garments, keeping positive pressure inside so dust cannot enter. UV-C lamps at 254 nm irradiate hanging garments for surface disinfection, with timers and door switches for safety. Some units include heated drying or nitrogen purge for sterile garments. Doors are glazed for visibility, and interiors are smooth for wipe-down. Units are sized for 1 to 6 persons and supplied as single or multi-door freestanding cabinets.

What are the key features?

• H14 HEPA fan filter unit
• Positive pressure of 15–30 Pa with alarm
• Electropolished 316L interior
• Gasketed glass doors
• Door-open alarms and event logging
• ISO 5 environment inside at rest

What are the technical specifications?

A typical sterile garment storage cabinet with positive pressure purge configuration offers filter grade of H14 HEPA, internal cleanliness of ISO 5 at rest, internal pressure of +15 to +30 Pa, airflow of 300–800 m3/h, interior material of 316L electropolished and width of 900–1500 mm. 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 Sterile Garment Storage Cabinet with Positive Pressure Purge is used in aseptic gowning for Grade A/B, sterile garment storage, biologics manufacturing and cell therapy facilities. Across the wider Garment Cabinets class, laboratories also deploy it for gowning rooms, pharmaceutical production and electronics cleanrooms.

Which standards and certifications apply?

Relevant standards and methods include ISO 14644-1 (cleanroom classification), ISO 14644-5 (cleanroom operations), EU GMP Annex 1 (sterile manufacturing), GB 50073 (cleanroom design code), IEST-RP-CC003 (garment system considerations) and IEC 61010-1. 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.

Place garment cabinets in the gowning vestibule or clean-side change room, away from draughts and wet areas. Clean the exterior and interior with cleanroom-compatible disinfectants at defined intervals, and replace prefilters every 3–6 months. UV lamps lose intensity after about 8000 hours and do not treat shadowed fabric folds, so they supplement and do not replace laundering. Define garment rotation, cleaning and sterilization cycles, and log them. Do not hang wet garments, and avoid storing personal items in the cabinet. Verify that airflow does not raise particles within the gowning room.

How do I select the right Sterile Garment Storage Cabinet with Positive Pressure Purge?

Select this cabinet where sterile garments must remain protected until use in aseptic operations. RFQ: pressure range, data logging, interior material and garment count. Final selection should be confirmed against the facility design specification and supplier test data. Also confirm the alarm requirements.

How does it compare with other Garment Cabinets variants?

Choose by the cleanliness of garments to store and the risk of contamination. For general ISO 7–8 areas, a ventilated steel cabinet may suffice; for sterile or ISO 5–6 garments, use HEPA-ventilated or sterile-purged units. Count the garments per shift and choose the number of compartments or hanger positions, noting coverall volume of about 0.05 m3 per garment. Check door type, glazing and locks, as well as whether UV disinfection is helpful. Verify materials, stainless steel 304 for pharma and powder-coated steel for electronics. Confirm dimensions for gowning-room layout, typical widths 600–1800 mm, and the electrical supply.