BOXUN VS-840-2 Vertical Flow Clean Bench
| Brand | BOXUN |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | VS-840-2 |
| Instrument Type | Vertical Flow Clean Bench |
| Cleanliness Class | ISO Class 5 (100-grade, ≥99.99% filtration efficiency for particles ≥0.5 µm) |
| Noise Level | ≤67 dB(A) |
| User Capacity | Single-operator, dual-front access |
| Airflow Pattern | Vertical downward laminar flow |
| Working 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 |
| Illumination | ≥300 lux (20 W fluorescent lamp × 1) |
| UV Sterilization Lamp | 20 W × 1 with 0–999 min timer |
| Air Velocity Range in Work Area | 0.3–0.6 m/s (adjustable in six steps) |
| Vibration Amplitude (peak-to-peak) | ≤5 µm (X/Y/Z axes) |
| Power Supply | AC 220 V ±10%, 50/60 Hz |
| Power Consumption | 0.15 kW |
| Net Weight | 120 kg |
Overview
The BOXUN VS-840-2 Vertical Flow Clean Bench is an ISO Class 5-certified laminar flow workstation engineered to deliver a particle-controlled environment for non-sterile but contamination-sensitive procedures. It operates on the principle of vertical unidirectional airflow: ambient air is drawn through a pre-filter and then forced downward through a certified high-efficiency particulate air (HEPA) filter (≥99.99% retention at 0.5 µm), creating a continuous, low-turbulence curtain of purified air across the work surface. This design isolates the operator from the process while protecting samples from airborne particulates—making it suitable for applications where product integrity depends on reduced environmental bioburden or particulate load, but where full aseptic containment (e.g., as required in biosafety cabinets) is not mandated.
Key Features
- Robust structural architecture: Cold-rolled steel housing with electrostatic powder coating; work surface and interior chamber constructed from brushed SUS304 stainless steel for corrosion resistance, chemical compatibility, and ease of decontamination.
- Stable and quiet airflow system: Centrifugal blower with precision-engineered impeller ensures consistent velocity output across the full 0.3–0.6 m/s operational range, with noise limited to ≤67 dB(A) at 1 m distance—critical for prolonged user comfort in shared lab environments.
- Intuitive human-machine interface: Backlit LCD display paired with tactile membrane switches enables precise, six-step fan speed adjustment, independent control of UV germicidal irradiation (20 W, timer range 0–999 minutes), and task lighting (20 W fluorescent).
- Enhanced ergonomic operation: Counterbalanced sash mechanism allows smooth, tool-free positioning of the vertical front window within its designated travel range—optimizing both operator reach and airflow integrity.
- Dual-stage filtration strategy: Integrated medium-efficiency pre-filter extends HEPA service life by capturing coarse particulates upstream, reducing maintenance frequency and total cost of ownership over extended operational cycles.
Sample Compatibility & Compliance
The VS-840-2 supports routine handling of cell cultures, microbiological media preparations, electronics assembly, pharmaceutical weighing, and environmental sample processing—provided such activities do not involve biohazards requiring biosafety level (BSL) containment. Its ISO 14644-1 Class 5 performance is validated per IEST-RP-CC001 and aligns with general Good Manufacturing Practice (GMP) and Good Laboratory Practice (GLP) environmental control expectations for non-sterile manufacturing and testing zones. While not certified to NSF/ANSI 49 or EN 12469 (standards governing biological safety cabinets), the unit meets applicable electrical safety requirements per GB 4793.1 (equivalent to IEC 61010-1) and electromagnetic compatibility (EMC) per GB/T 18268.1.
Software & Data Management
This clean bench operates as a standalone mechanical-electrical system with no embedded firmware or network connectivity. All operational parameters—including fan speed setting, UV exposure duration, and illumination status—are manually selected and visually confirmed via the LCD interface. No audit trail, data logging, or remote monitoring capability is included. For laboratories operating under FDA 21 CFR Part 11 or EU Annex 11 requirements, procedural documentation (e.g., daily startup verification, UV cycle logs, filter replacement records) must be maintained externally using paper-based or validated electronic quality management systems (QMS).
Applications
- Preparation of culture media and reagents in microbiology and molecular biology labs
- Handling of non-pathogenic cell lines during passaging or transfection protocols
- Assembly and inspection of sensitive optoelectronic components and PCBs
- Weighing and dispensing of active pharmaceutical ingredients (APIs) in non-sterile formulation areas
- Environmental sampling preparation—including filter mounting and extraction setup—prior to analytical testing
- General laboratory tasks requiring localized particulate reduction without personnel protection against aerosolized agents
FAQ
What ISO cleanliness class does the VS-840-2 achieve?
It meets ISO 14644-1 Class 5 (formerly “100-grade”), verified for ≥99.99% removal efficiency of particles ≥0.5 µm.
Is this unit suitable for working with infectious agents?
No. It provides product protection only—not personnel or environmental protection—and must not be used for BSL-2 or higher organisms.
How often should the HEPA filter be replaced?
Replacement interval depends on usage intensity and ambient air quality; typical service life ranges from 12 to 24 months, contingent upon pre-filter maintenance and pressure drop monitoring.
Can the UV lamp be operated while the fan is running?
UV sterilization is interlocked with the sash position and fan status; operation is disabled when the front window is open or airflow is inactive—ensuring operator safety and lamp efficacy.
Does the unit comply with FDA or EU regulatory standards for pharmaceutical manufacturing?
It satisfies baseline environmental control expectations under ICH Q5, EU GMP Annex 1 (non-sterile sections), and USP , but final qualification requires site-specific installation, operational, and performance qualification (IQ/OQ/PQ) protocols.
