AIRTECH VS-840K-II Vertical Laminar Flow Clean Bench

Overview

The AIRTECH VS-840K-II is a vertically oriented laminar flow clean bench engineered for precision aseptic manipulation in microbiological, pharmaceutical, and cell culture laboratories. It operates on the principle of vertical unidirectional airflow—air is drawn through a pre-filter, conditioned by a high-efficiency particulate air (HEPA) filter (rated at ≥99.99% efficiency for particles ≥0.3 µm), and delivered uniformly downward across the work surface at a minimum velocity of 0.3 m/s. This airflow architecture establishes an ISO 5 (Class 100, per former US Federal Standard 209E) environment within the work area, effectively suppressing airborne microbial contamination and particulate deposition during open handling of sterile materials. Designed for single-user operation, the unit complies with core requirements of ISO 14644-1 for cleanroom performance verification and aligns with general Good Laboratory Practice (GLP) infrastructure expectations for non-sterile but particle-controlled environments.

Key Features

• Three-stage adjustable fan speed control via intuitive digital touch interface, enabling precise airflow optimization for varying procedural demands.
• Programmable UV lamp scheduling with cumulative runtime tracking—supports automated disinfection cycles while maintaining operational transparency and maintenance traceability.
• Full-height, recessed tempered glass side panels provide unobstructed lateral visibility without compromising laminar integrity or structural rigidity.
• Stepless sash positioning system allows continuous vertical adjustment of the front access window to accommodate diverse sample heights and ergonomic preferences.
• Monolithic 304 stainless steel work surface with radiused leading edge—resistant to corrosion from common laboratory reagents and compatible with routine decontamination protocols (e.g., 70% ethanol, diluted sodium hypochlorite).
• Electrostatically powder-coated cold-rolled steel outer enclosure in antimicrobial white finish—minimizes surface biofilm adhesion and facilitates periodic cleaning validation.
• Aerodynamically optimized chassis geometry reduces turbulence at the work surface perimeter, preserving laminar stability even during frequent operator movement.
• Integrated dual-mode mobility system: heavy-duty swivel casters with independent locking leveling feet ensure both flexible repositioning and stable, vibration-dampened operation.
• Front-access pre-filter housing enables tool-free removal, rinsing, and reinstallation—reducing downtime and supporting preventive maintenance schedules.
• Interlocked lighting and UV irradiation circuits prevent simultaneous activation; redundant safety circuitry includes power-fail protection and dedicated 3A GFCI-protected auxiliary outlet.

Sample Compatibility & Compliance

The VS-840K-II supports open handling of non-hazardous biological agents, sterile media, tissue culture flasks, Petri dishes, and precision instrumentation components requiring ISO 5 environmental control. It is not designed for containment of hazardous aerosols or volatile organic compounds (VOCs); therefore, it does not meet NSF/ANSI 49 Class I or II biosafety cabinet requirements. Performance validation follows manufacturer-established test protocols aligned with ISO 14644-3:2019 Annex B (laminar flow device testing), including particle count mapping, airflow velocity profiling, and settling plate microbiological assessment (≤0.5 CFU/plate·0.5 h). Units undergo full factory acceptance testing prior to shipment, documenting compliance with GB/T 25222–2010 (Chinese national standard for clean benches) and basic electrical safety per IEC 61010-1.

Software & Data Management

While the VS-840K-II operates via embedded microcontroller-based hardware—not a PC-driven software platform—it provides digital logging capabilities critical for quality assurance workflows. Runtime data for UV lamps, blower motors, and HEPA filter usage are stored locally and displayed on the front panel LCD. These metrics support scheduled maintenance planning and satisfy basic traceability needs under GLP and internal QA frameworks. No network connectivity or remote monitoring is provided; however, all logged parameters are exportable manually via visual readout and can be recorded in laboratory logbooks or electronic lab notebooks (ELNs) compliant with FDA 21 CFR Part 11 when paired with appropriate audit trail procedures.

Applications

• Aseptic transfer of microbial cultures and fungal spores in academic and industrial microbiology labs.
• Preparation of sterile culture media, antibiotics, and reagents in pharmaceutical QC laboratories.
• Handling of primary cells and sensitive cell lines during passaging and transfection procedures.
• Assembly and inspection of precision optical or microfluidic components requiring low-particulate environments.
• Supporting ISO/IEC 17025-accredited testing where background particulate control is mandated for method validity.

FAQ

Is the VS-840K-II certified to ISO 14644-1 Class 5?
Yes—the work area consistently achieves and maintains ISO 5 (equivalent to Class 100 per Fed. Std. 209E) under standardized test conditions as verified during factory acceptance testing.
Can this unit be used for handling pathogenic organisms?
No. It provides product protection only, not personnel or environmental protection. Biosafety Level 2+ agents require certified Class II biological safety cabinets meeting NSF/ANSI 49.
What is the expected service life of the HEPA filter?
Filter longevity depends on ambient air quality and usage frequency; typical replacement intervals range from 12 to 24 months, guided by pressure drop monitoring and particle challenge testing.
Does the unit include calibration documentation?
Each unit ships with a Factory Performance Test Report detailing airflow velocity, noise level, illumination intensity, and microbial settling results—traceable to internal metrology standards.
Is the stainless steel work surface electropolished?
No—it is mechanically polished 304 stainless steel with a #4 finish, sufficient for routine decontamination and compliant with ISO 14644-1 surface cleanliness requirements for clean benches.