BOXUN BJ-2CD Vertical Laminar Flow Clean Bench

Overview

The BOXUN BJ-2CD Vertical Laminar Flow Clean Bench is an ISO Class 5-certified local containment system engineered to deliver unidirectional, particle-free airflow across the work surface—critical for aseptic handling of sensitive biological samples, sterile media preparation, and low-risk microbiological procedures. Unlike horizontal flow hoods that exhaust air toward the operator, this vertical laminar flow bench directs filtered air downward—from top-mounted HEPA filters through a uniform plenum—minimizing turbulence and cross-contamination risks within the work area. Its design adheres to core principles defined in ISO 14644-1 for cleanroom performance and aligns with general laboratory biosafety guidelines for non-pathogenic or BSL-1 applications. The unit does not provide personnel or environmental protection against hazardous aerosols; it is intended solely for product protection under controlled ambient conditions.

Key Features

• Vertical laminar airflow architecture with precision-engineered plenum distribution ensures consistent 0.3–0.6 m/s velocity across the full 1300 × 700 mm work surface, validated per ISO 14644-3 Annex B protocols.
• Dual-stage filtration system: a pre-filter (medium-efficiency, G4 class) extends HEPA service life by capturing coarse particulates; followed by a single 1270 × 604 × 50 mm H14-grade HEPA filter (EN 1822-1 compliant, ≥99.995% efficiency at MPPS ≈0.3 µm).
• Real-time operational monitoring via 5.7-inch backlit LCD interface displaying air velocity (0.01 m/s resolution), cumulative runtime, HEPA differential pressure (ΔP), internal clock, and filter health status bar.
• Integrated safety interlocks: UV germicidal lamp (30 W, 254 nm) deactivates automatically when sash is opened or lighting is engaged; lighting (40 W fluorescent, ≥300 lx at work surface) operates independently but shares no circuit overlap with UV.
• Ergonomic workstation design: 5° forward-sloping front panel reduces operator fatigue; counterbalanced vertical sash enables precise positioning between 150–400 mm height; stainless steel 304 work surface resists corrosion and facilitates ISO 14644-1 compatible cleaning protocols.
• Structural integrity: cold-rolled steel housing with epoxy-powder coating; castor-mounted base with leveling feet ensures stability on standard laboratory flooring (vibration <5 µm peak-to-peak under idle conditions).

Sample Compatibility & Compliance

The BJ-2CD supports routine aseptic tasks involving cell culture passaging, sterile reagent dispensing, microbial plate inoculation, and pharmaceutical component assembly where environmental particulate control—not chemical or biological hazard containment—is the primary objective. It complies with ISO 14644-1:2015 (Class 5), IEST-RP-CC002.3 (laminar flow device testing), and relevant sections of USP for non-hazardous compounding environments. While not certified to NSF/ANSI 49 or EN 12469 (which govern biosafety cabinets), its construction and performance metrics meet GLP-aligned validation requirements for equipment used in QC/QA labs conducting non-regulated or internally governed processes.

Software & Data Management

This clean bench operates as a standalone hardware platform without embedded software or network connectivity. All operational data—including total runtime, HEPA ΔP trend, and user-adjusted air velocity settings—are retained locally on the LCD module’s non-volatile memory. No remote access, cloud upload, or audit trail functionality is included. For regulated environments requiring documentation, users must implement external logbooks or integrate manual timestamped records into their laboratory quality management system (QMS) per ISO/IEC 17025 clause 7.7 or FDA 21 CFR Part 11 Annex A (if electronic records are adopted).

Applications

• Preparation of sterile culture media and buffers in academic and industrial biotechnology labs.
• Aseptic transfer of mammalian or microbial cells during routine expansion and cryopreservation workflows.
• Assembly and inspection of microfluidic devices and optical components requiring particulate-free handling.
• Environmental monitoring sample processing—e.g., air and water filter analysis—where background contamination must be minimized.
• Electronics manufacturing support: solder paste application, PCB component placement, and precision calibration under low-particulate conditions.

FAQ

Does the BJ-2CD qualify as a biosafety cabinet (BSC)?
No. It provides product protection only and lacks inward airflow, negative pressure containment, and exhaust ducting required for BSL-2 or higher applications.
What maintenance intervals are recommended for the HEPA filter?
Filter replacement is determined empirically via ΔP monitoring; typical service life ranges from 12–24 months depending on ambient air quality and usage frequency. Pre-filter cleaning every 2–4 weeks is advised.
Can the unit be installed in a non-temperature-controlled room?
Yes—operational range is 10–35°C and 30–80% RH non-condensing—but sustained operation above 30°C may reduce fan motor longevity and affect velocity stability.
Is third-party certification available for ISO Class 5 validation?
BOXUN provides factory-installed HEPA filter certificates (EN 1822 test reports); full ISO 14644-3 field certification requires engagement of an accredited第三方 testing provider.
Are replacement HEPA filters supplied with integrity test documentation?
Each OEM HEPA filter ships with a manufacturer-issued Certificate of Conformance, including initial DOP/NaCl penetration test results and seal integrity verification.