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 a defined work surface. Operating on the principle of vertical laminar flow, ambient air is drawn through a pre-filter (medium-efficiency), then pressurized into a plenum chamber and uniformly distributed downward through a certified HEPA filter (EN 1822-1:2022, H14 grade; ≥99.99% retention for ≥0.5 µm particles). This creates a sterile, low-turbulence environment suitable for non-hazardous microbiological procedures, aseptic material handling, and precision instrumentation assembly where operator protection is not required but product integrity is critical. Unlike biosafety cabinets, the BJ-2CD does not recirculate air nor provide personnel or environmental protection—its design strictly prioritizes sample and process protection in cleanroom-adjacent laboratory spaces.

Key Features

• Vertical laminar airflow architecture compliant with ISO 14644-1 Class 5 (formerly Federal Standard 209E Class 100) performance criteria.
• Real-time digital monitoring via integrated LCD interface: displays instantaneous face velocity (0.3–0.6 m/s, adjustable in six discrete steps), cumulative operating hours, HEPA differential pressure, system clock, and filter service life indicator.
• Dual-stage filtration system: washable polyester pre-filter extends HEPA service life; certified H14 HEPA filter (1270 × 604 × 50 mm) tested per EN 1822.
• Fail-safe interlock logic: UV lamp activation automatically disables fluorescent lighting and vice versa; door position sensors enforce operational safety protocols.
• Ergonomic front sash angled at 5° for optimal visual alignment and reduced operator fatigue during extended use.
• Robust structural assembly: cold-rolled steel outer casing with electrophoretic coating; SUS304 brushed stainless steel work surface resistant to corrosion, chemical exposure, and repeated disinfection.
• Low-vibration centrifugal blower system with speed-stabilized motor ensures consistent airflow uniformity and acoustic compliance (≤67 dB[A] at 1 m).
• Integrated utility interfaces: splash-proof 220 V AC power outlets, compressed air and liquid supply ports recessed within the work surface perimeter.
• Mobile base with dual-locking casters and adjustable leveling feet enables flexible lab reconfiguration without compromising stability.

Sample Compatibility & Compliance

The BJ-2CD is validated for applications involving non-pathogenic microorganisms (BSL-1), cell culture media preparation, pharmaceutical component weighing, electronic component soldering, and optical lens assembly. It meets core requirements of ISO 14644-1:2015 for cleanroom performance verification and supports GLP-aligned documentation practices through timestamped operational logs. While not designed for containment of biohazards or volatile chemicals, its construction materials comply with UL 61010-1 for electrical safety and IEC 60335-1 for general household and similar electrical appliances. All lighting components conform to IEC 62471 photobiological safety standards.

Software & Data Management

The embedded control system provides non-volatile storage of runtime parameters including total operating hours, HEPA delta-P trends, and user-defined velocity setpoints. No external software or PC connectivity is required for routine operation; however, time-stamped event logs (e.g., UV cycle initiation, alarm triggers, filter replacement alerts) are retained locally and accessible via the LCD menu. The system supports audit-ready recordkeeping for laboratories adhering to ISO/IEC 17025 or FDA 21 CFR Part 11-compliant workflows when paired with manual logbook entries or third-party LIMS integration via RS-232 (optional module available upon request).

Applications

• Aseptic transfer of microbial cultures and plant tissue explants in academic and industrial biotechnology labs.
• Weighing and dispensing of active pharmaceutical ingredients (APIs) under controlled particulate conditions per USP <797> guidance.
• Assembly and calibration of high-precision sensors, MEMS devices, and optical components requiring sub-micron particulate control.
• Preparation of standard reference materials and calibration standards for analytical chemistry workflows.
• Environmental monitoring sample processing—including air filter analysis and water microbiology membrane filtration—where background contamination must be minimized.

FAQ

What ISO cleanliness class does the BJ-2CD achieve?
It maintains ISO Class 5 (equivalent to old US FED-STD-209E Class 100) in the work area, verified by particle counting per ISO 21501-4 using a calibrated light-scattering airborne particle counter.
Is the HEPA filter certified to EN 1822?
Yes—the installed filter is H14 grade, independently tested and certified to EN 1822-1:2022 for ≥99.995% efficiency at MPPS (~0.2–0.3 µm), with full test report traceable to the manufacturer’s batch number.
Can the unit be integrated into a facility’s BMS or monitoring network?
Standard configuration includes analog 0–10 V output for face velocity and digital relay outputs for alarm states; Modbus RTU (RS-485) interface is available as a factory-installed option.
Does the BJ-2CD meet any regulatory requirements for pharmaceutical manufacturing?
While not a GMP-certified device per se, it satisfies the environmental control expectations outlined in EU GMP Annex 1 (2022) for Grade A background environments when operated within a Grade B cleanroom, provided qualification (IQ/OQ/PQ) is performed per ISO 14644-3.
What maintenance intervals are recommended for the pre-filter and HEPA filter?
Pre-filter cleaning is advised every 2–4 weeks depending on ambient particulate load; HEPA replacement is typically required every 18–36 months, contingent upon delta-P monitoring and upstream air quality—full replacement records must be retained per ISO 14644-3 Section 8.3.