BOXUN VS-840-1 Vertical Laminar Flow Clean Bench
| Brand | BOXUN |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Instrument Category | Vertical Laminar Flow Clean Bench |
| Cleanliness Class | ISO Class 5 (100-level, ≥99.99% filtration efficiency for particles ≥0.5 µm) |
| Noise Level | ≤67 dB(A) |
| User Capacity | Single-user, single-front configuration |
| Airflow Pattern | Vertical downward laminar flow |
| Work Area Dimensions (W×D×H) | 830 × 650 × 520 mm |
| Overall Dimensions (W×D×H) | 990 × 700 × 1650 mm |
| HEPA Filter Specification | 780 × 565 × 50 mm (1 unit) |
| Pre-filter | Medium-efficiency panel filter |
| Air Velocity Range | 0.3–0.6 m/s (adjustable in six discrete steps) |
| Illumination | ≥300 lx (20 W fluorescent lamp) |
| UV Sterilization Lamp | 20 W, timer-controlled (0–999 min) |
| Vibration Peak-to-Peak | ≤10 µm (X/Y/Z axes) |
| Power Supply | AC 220 V ±10%, 50/60 Hz |
| Power Consumption | 0.15 kW |
| Net Weight | 115 kg |
Overview
The BOXUN VS-840-1 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, the unit draws ambient air through a pre-filter and a certified high-efficiency particulate air (HEPA) filter (EN 1822-1 H14, ≥99.99% @ 0.5 µm), then directs it vertically downward at a controlled, uniform velocity (0.3–0.6 m/s) across the work area. This airflow curtain isolates the workspace from surrounding environmental contaminants—preventing cross-contamination during aseptic procedures such as cell culture handling, microbiological inoculation, reagent preparation, and sterile assembly of diagnostic kits. Designed for compliance with core laboratory hygiene standards—including ISO 14644-1, ISO 14698-1, and relevant sections of EU GMP Annex 1—the VS-840-1 serves as a foundational engineering control in biosafety-conscious environments where full biological safety cabinets are not required but particulate integrity is critical.
Key Features
- Robust structural architecture: Cold-rolled steel outer casing with electrostatic epoxy powder coating; 304 stainless steel work surface (brushed finish) for corrosion resistance, chemical compatibility, and ease of decontamination.
- Precision airflow management: Centrifugal blower with speed-stabilized motor ensures consistent laminar velocity distribution and low acoustic emission (≤67 dB[A] at 1 m).
- Intuitive human-machine interface: Backlit LCD display with tactile membrane switches enabling six-step fan speed selection, independent dual-channel control (fluorescent lighting and UV germicidal irradiation), and programmable UV exposure timing (0–999 minutes).
- Enhanced operational ergonomics: Counterbalanced sash mechanism allows smooth, tool-free positioning of the front access window within its designated vertical travel range—optimizing operator comfort and airflow integrity.
- Dual-stage filtration system: Integrated medium-efficiency pre-filter extends service life of the primary HEPA filter (780 × 565 × 50 mm, H14 grade); both filters conform to EN 1822 test protocols and are replaceable without specialized tools.
- Validated performance envelope: Meets ISO 14644-1 Class 5 requirements for particle concentration (≤3,520 particles/m³ ≥0.5 µm), with measured vibration amplitude ≤10 µm peak-to-peak across orthogonal axes—critical for micro-manipulation and optical alignment tasks.
Sample Compatibility & Compliance
The VS-840-1 is intended for non-hazardous, non-volatile, non-toxic samples requiring particulate-free handling—not for use with biohazards, volatile organic compounds, or radionuclides. It complies with national and international design and performance benchmarks including JB/T 20063–2007 (Chinese pharmaceutical equipment standard), ISO 14644-1:2015 (cleanroom classification), and IEST-RP-CC002.2 (laminar flow device testing). Its construction materials and electrical architecture meet IP20 ingress protection and GB 4793.1–2007 (safety requirements for electrical equipment for measurement, control, and laboratory use). The unit supports GLP-aligned documentation workflows when integrated with facility-wide calibration and maintenance records.
Software & Data Management
While the VS-840-1 operates via embedded microcontroller logic without external software dependency, its control system logs operational parameters—including cumulative UV runtime, total fan operating hours, and last-set airflow mode—for traceable maintenance scheduling. Optional RS-485 serial interface (available upon request) enables integration into centralized laboratory monitoring platforms for real-time status reporting and preventive maintenance alerts. All user-accessible settings retain memory after power interruption, and firmware updates—when released—are distributed via secure USB-based protocol compliant with IEC 62443-3-3 cybersecurity guidelines for industrial control systems.
Applications
- Aseptic preparation of mammalian and insect cell culture media, transfection reagents, and cryopreservation solutions.
- Handling of primary tissue explants and stem cell derivatives under contamination-controlled conditions.
- Assembly and quality verification of in vitro diagnostic (IVD) devices and microfluidic cartridges.
- Environmental microbiology: Petri dish pouring, colony isolation, and selective media preparation per ISO 7218 and APHA Standard Methods.
- Electronics manufacturing support: Clean placement and inspection of precision optical components and MEMS sensors.
- Academic teaching labs: Demonstrating laminar flow principles, filter efficiency validation, and sterility assurance protocols aligned with ASTM E2994 and USP .
FAQ
Does the VS-840-1 provide personnel or environmental protection?
No. As a clean bench—not a biological safety cabinet—it protects only the product/work surface from ambient particulates. It does not protect the operator from hazardous aerosols or shield the environment from process emissions.
What is the recommended HEPA filter replacement interval?
Under typical laboratory usage (8 hrs/day, 5 days/week), the HEPA filter should be replaced every 18–24 months or when differential pressure exceeds 250 Pa across the filter bank, whichever occurs first. Pre-filter replacement is advised every 3–6 months.
Can the unit be validated for ISO Class 5 compliance?
Yes. The VS-840-1 is designed to pass ISO 14644-1 Class 5 certification when installed in a Class 7 or cleaner ambient environment and subjected to standardized particle counting (ISO 21501-4), airflow uniformity (ISO 14644-3), and recovery testing (ISO 14644-3 Annex B). Full qualification requires third-party commissioning.
Is UV irradiation dose calibrated and traceable?
UV lamp intensity is verified at installation using NIST-traceable radiometry. Dose delivery (µW·s/cm²) depends on distance, exposure time, and lamp aging; users must validate microbial kill efficacy (e.g., against Bacillus atrophaeus spores) per ISO 15714 for critical applications.
What electrical safety certifications does the unit hold?
The VS-840-1 conforms to GB 4793.1–2007 (equivalent to IEC 61010-1) for laboratory electrical safety, including dielectric strength, leakage current, and protective earth continuity requirements. CE marking is available for export configurations meeting EMC Directive 2014/30/EU and Low Voltage Directive 2014/35/EU.
