BOXUN VS-840-1 Vertical Laminar Flow Clean Bench
| Brand | BOXUN |
|---|---|
| Origin | Shanghai, China |
| Model | VS-840-1 |
| Instrument Type | Vertical Laminar Flow Clean Bench |
| Cleanliness Class | ISO Class 5 (100 @ ≥0.5 µm, ≥99.99% HEPA filtration efficiency) |
| Airflow Pattern | Vertical Downflow |
| User Capacity | Single-user, front-access configuration |
| Operating Noise Level | ≤67 dB(A) |
| Work Area Dimensions (W×D×H) | 830 × 650 × 520 mm |
| Overall Dimensions (W×D×H) | 990 × 700 × 1650 mm |
| Average Face Velocity Range | 0.3–0.6 m/s (adjustable in six discrete steps) |
| Illumination | ≥300 lux (fluorescent lamp, 20 W) |
| UV Germicidal Lamp | 20 W, timer-controlled (0–999 min) |
| Vibration Amplitude (peak-to-peak) | ≤5 µm (X/Y/Z axes) |
| Filter Configuration | One 780 × 565 × 50 mm H14 HEPA filter (EN 1822-1), pre-filtered by a mid-efficiency panel filter |
| Power Supply | AC 220 V ±10%, 50/60 Hz |
| Rated 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 exhaust ventilation system engineered to provide a particle-controlled workspace for non-hazardous procedures requiring protection of the product or process from ambient airborne contamination. It operates on the principle of vertical laminar airflow: air is drawn through a pre-filter and conditioned through a certified H14 high-efficiency particulate air (HEPA) filter (EN 1822-1 compliant), delivering unidirectional, low-turbulence downflow across the work surface at a user-adjustable velocity between 0.3 and 0.6 m/s. This controlled airflow establishes a sterile barrier—preventing ingress of room air contaminants while maintaining operator safety during aseptic manipulations. Designed for routine microbiological handling, cell culture setup, reagent preparation, and precision instrument assembly, the VS-840-1 complies with core performance requirements outlined in ISO 14644-1 (Cleanrooms and associated controlled environments), ISO 14644-3 (Test methods), and NSF/ANSI 49 (for non-recirculating clean benches). It is not intended for use with volatile toxic, radioactive, or biohazardous agents requiring personnel or environmental protection.
Key Features
- Robust structural architecture: Cold-rolled steel housing with electrostatic powder coating; work surface and interior chamber fabricated from brushed SUS304 stainless steel for corrosion resistance, chemical compatibility, and ease of decontamination.
- Stable aerodynamic performance: Centrifugal blower with speed-regulated operation ensures consistent face velocity across the full working range—minimizing turbulence and maintaining laminar integrity under varying filter loading conditions.
- Intuitive human-machine interface: LCD display with tactile membrane switches enables precise six-step fan speed control, real-time status monitoring, and independent activation of UV germicidal irradiation (with programmable timer up to 999 minutes) and task lighting.
- Optimized ergonomics and containment: Vertically oriented, quasi-enclosed work chamber with counterbalanced sash mechanism allows smooth, tool-free positioning of the front access window within its operational travel range—enhancing operator comfort and workflow continuity.
- Extended filter service life: Dual-stage filtration architecture—comprising a replaceable mid-efficiency pre-filter upstream of the main H14 HEPA unit—reduces particulate loading on the final filter, thereby increasing service intervals and lowering long-term TCO (Total Cost of Ownership).
Sample Compatibility & Compliance
The VS-840-1 supports open-vessel handling of sterile media, microbial cultures, tissue samples, electronic components, and optical assemblies where product protection is the primary objective. It is routinely deployed in QC laboratories performing USP compounding support tasks (non-hazardous preparations), ISO 13485-certified medical device manufacturing environments, and GLP-compliant analytical sample preparation workflows. While it does not meet biosafety cabinet (BSC) classification standards (e.g., NSF/ANSI 49 Class II), its ISO Class 5 performance aligns with baseline requirements for Grade A environments per EU GMP Annex 1 (2022) when installed and validated in accordance with site-specific cleanroom protocols. All electrical components conform to IEC 61010-1 safety standards; UV lamp output is calibrated to deliver ≥40 µW/cm² at 1 meter for effective surface decontamination.
Software & Data Management
The VS-840-1 operates via embedded firmware without external software dependency. Critical operational parameters—including fan speed setting, UV exposure duration, and cumulative runtime—are stored in non-volatile memory and displayed on the integrated LCD interface. Though not equipped with network connectivity or audit-trail functionality, the unit supports manual calibration verification and periodic performance qualification (PQ) in accordance with ISO 14644-3 test protocols (e.g., airflow uniformity mapping, particle count testing, filter leak scanning). For regulated environments requiring documentation, users may integrate the bench into facility-wide validation programs using third-party data loggers for continuous velocity and temperature/humidity monitoring.
Applications
- Aseptic preparation of culture media, diluents, and buffers in microbiology and molecular biology labs
- Handling of sensitive electronic substrates and micro-optical components during R&D prototyping
- Assembly and inspection of sterile medical devices prior to packaging
- Environmental monitoring sample processing (e.g., air/water filters, settle plates)
- Supporting ISO/IEC 17025-accredited testing workflows where sample integrity depends on particulate-free manipulation
FAQ
Does the VS-840-1 meet ISO Class 5 (100) certification requirements?
Yes—the unit achieves ISO 14644-1 Class 5 performance when tested per ISO 14644-3 with ≥99.99% particle removal efficiency for particles ≥0.5 µm, verified using a certified H14 HEPA filter.
Can this clean bench be used for handling hazardous biological agents?
No. The VS-840-1 provides only product protection. It lacks negative-pressure containment, recirculation safeguards, and personnel/environmental protection features required for BSL-2 or higher applications.
What maintenance intervals are recommended for the HEPA and pre-filters?
Pre-filters should be inspected monthly and replaced every 3–6 months depending on ambient particulate load; HEPA filters require annual integrity testing (DOP/PAO scan) and replacement every 3–5 years under normal laboratory conditions.
Is the UV lamp intensity validated and traceable to NIST standards?
UV irradiance is factory-calibrated; however, end-user verification using a NIST-traceable radiometer is required before first use and after each lamp replacement per USP and ISO 15189 recommendations.
Does the unit comply with FDA 21 CFR Part 11 for electronic records?
No—the VS-840-1 has no electronic record generation capability. Its operation falls outside the scope of Part 11; data logging must be performed externally if ALCOA+ principles apply to the process.
