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معدات التدفق والاحتواء الصفائحية
Class II نوع A2 مجلس الوزراء السلامة البيولوجية
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
مقدمة المنتج
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.
الخصائص الرئيسية
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.
مخاوف المنتج للعملاء
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.
تطبيقات نموذجية
Cell cultureClinical microbiologyNon-volatile biological sample preparationSterile biological product handling
المعلمات الفنية
Typical configurable construction ranges for a Class II Type A2 biological safety cabinet are listed below.
| المواد الأساسية | SUS304 single-piece work-zone liner with powder-coated steel outer shell and mineral-wool acoustic fan enclosure |
|---|---|
| سمك اللوحة | 30-60 mm double-wall cabinet and plenum sections |
| العرض الفعال | 900-1800 mm clear working width |
| الحد الأقصى الطول | Up to 2400 mm overall cabinet height |
| الصلب يواجه سمك | 1.0-1.5 mm SUS304 inner liner; 0.9-1.2 mm outer steel |
| الكثافة الأساسية | 80-120 كجم / م3 الصوف المعدني الصوتية ملء |
| الموصلية الحرارية | 0.035-0.045 W / (m·K) لملء الصوتية |
| إنهاء السطح | Fine-brushed SUS304 work zone with white epoxy-polyester outer coating |
| نوع المشترك | Welded inner liner with negative-pressure plenum joints and gasketed supply and exhaust HEPA frames |
| التخصيص | متوفر على أساس التطبيق المقصود وبيئة التشغيل. |
الخيارات المتاحة
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?
أرسل لنا الأبعاد الخاصة بك، شروط التثبيت، أهداف الأداء والتشطيب السطحي المطلوب.
