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Équipement d'écoulement et de confinement laminaires
Cabinet de sécurité biologique de type A2 de classe II
A recirculating Class II cabinet that combines inward face airflow, HEPA-filtered vertical downflow and filtered exhaust for three-way protection.
- Personnel Product and Environmental Protection
- HEPA-Filtered Downflow
- Negative-Pressure Contaminated Plenums
- Recirculating A2 Airflow
Introduction de produit
The Type A2 cabinet draws room air inward at the front grille while HEPA-filtered downflow protects the work zone. A portion of the filtered air is recirculated and the balance is exhausted through a HEPA stage, either into the room or through an appropriate canopy connection. Contaminated plenums are maintained under negative pressure or surrounded by negative-pressure sections. The cabinet is selected and installed for biological particulate work; volatile chemical use requires a separately evaluated exhaust strategy.
Key Features
Vertical filtered downflow limits cross-contamination across the product zone.
Negative-pressure plenum design provides a fail-safe boundary around contaminated air paths.
A motorized or counterbalanced sash maintains the selected operating height.
Independent inflow and downflow sensing supports real-time airflow monitoring.
Préoccupations du client produit
A Type A2 cabinet must balance operator capture and clean product downflow while keeping recirculated air paths safely enclosed.
Hands crossing the front grille disrupt containment.A properly sized grille and stable inflow maintain capture around normal arm movement.
Items block downflow and create cross-contamination zones.A wide supply diffuser and organized work layout preserve first-air paths.
Filter loading shifts the inflow/downflow balance.Separate airflow sensors and automatic blower control maintain the selected operating range.
The cabinet is used with unsuitable volatile chemicals.Application guidance distinguishes A2 biological particulate work from total-exhaust chemical handling.
Les applications typiques
Cell cultureClinical microbiologyNon-volatile biological sample preparationSterile biological product handling
Paramètres techniques
Typical configurable construction ranges for a Class II Type A2 biological safety cabinet are listed below.
| Matériaux de base | SUS304 single-piece work-zone liner with powder-coated steel outer shell and mineral-wool acoustic fan enclosure |
|---|---|
| Panneau épaisseur | 30-60 mm double-wall cabinet and plenum sections |
| Largeur effective | 900 - 1800 mm Largeur de travail claire |
| Longueur maximale | Up to 2400 mm overall cabinet height |
| Acier face épaisseur | 1.0-1.5 mm SUS304 inner liner; 0.9-1.2 mm outer steel |
| Densité Core | 80 - 120 kg / m3 remplissage acoustique en laine minérale par |
| Conductivité thermique | 0,035 - 0,045 W / (m · K) pour le remplissage acoustique |
| surface finie | Fine-brushed SUS304 work zone with white epoxy-polyester outer coating |
| Type joint | Welded inner liner with negative-pressure plenum joints and gasketed supply and exhaust HEPA frames |
| Customisation | Disponible en fonction de l'application prévue et de l'environnement d'exploitation. |
Options disponibles
900-1800 mm work widthsRoom exhaust or canopy connectionMotorized sashSingle-piece or segmented work tray
Planning a Class II Type A2 Biological Safety Cabinet specification?
Envoyez-nous vos dimensions, conditions d'installation, objectifs de performance et finition de surface requise.
