HJ SW-CJ-1G Stainless Steel Horizontal Laminar Flow Clean Bench

Overview

The HJ SW-CJ-1G Stainless Steel Horizontal Laminar Flow Clean Bench is an ISO Class 5-certified laminar airflow workstation engineered for unidirectional horizontal air filtration and operator-protected sample handling in non-sterile but particle-controlled environments. Unlike vertical flow biosafety cabinets, this clean bench directs ISO-certified HEPA-filtered air horizontally across the work surface—away from the operator—making it suitable for applications where sample protection is critical but personnel or environmental containment is not required (e.g., electronics assembly, pharmaceutical weighing, cell culture preparation under aseptic conditions, and precision instrumentation calibration). The unit complies with US Federal Standard 209E (Class 100) for airborne particulate concentration and meets structural and performance benchmarks defined in ISO 14644-1 for cleanroom equipment qualification.

Key Features

• Full stainless steel construction: Cold-rolled carbon steel frame with electrostatic powder coating; work surface fabricated from brushed SUS201 stainless steel for corrosion resistance, mechanical durability, and ease of decontamination.
• Horizontal laminar airflow system: Delivers uniform, low-turbulence airflow at 0.25–0.45 m/s across the entire working area, validated via anemometry and smoke visualization per ISO 14644-3 Annex B.
• Two-stage filtration architecture: Integrated pre-filter (G4 class) extends service life of the main H14-grade HEPA filter (EN 1822-compliant, ≥99.995% efficiency at 0.3 µm), minimizing maintenance frequency and total cost of ownership.
• Intuitive digital control interface: Backlit LCD panel enables real-time monitoring and adjustment of fan speed, UV lamp timer, and lighting mode—supporting GLP-aligned operational logging when paired with external audit trails.
• Adjustable sash mechanism: Precision-balanced sliding front window allows variable access height without disrupting laminar integrity or requiring recalibration.
• Dual lighting system: 12 W cool-white fluorescent lamp (≥300 lux at work surface) for routine operation; independently switchable 20 W germicidal UV-C lamp (254 nm) with safety interlock to prevent accidental exposure during active use.

Sample Compatibility & Compliance

The SW-CJ-1G supports open-vessel manipulations involving non-hazardous, non-volatile, and non-aerosol-generating materials—including microbiological media plates, optical components, semiconductor wafers, and analytical standards. It is not designed for use with biohazards, radioactive isotopes, or toxic chemicals requiring containment. The unit conforms to ISO 14644-1 (Cleanrooms and associated controlled environments), IEST-RP-CC002.3 (Testing Clean Benches), and relevant sections of ASTM E2500 (Good Manufacturing Practice for Pharmaceutical Equipment Qualification). While not FDA 21 CFR Part 11 compliant out-of-the-box, its digital controls support integration into validated systems with supplemental electronic record management protocols.

Software & Data Management

This clean bench operates as a standalone hardware platform without embedded firmware-based data logging. However, its digital interface provides timestamped event indicators (e.g., UV on/off, light activation) that may be recorded manually or captured via external environmental monitoring systems (EMS) compliant with GMP Annex 15 and EU GMP Chapter 4. Optional RS-485 or analog 4–20 mA output modules (available upon request) enable connection to building management systems (BMS) or centralized HVAC supervisory controllers for trend analysis and preventive maintenance scheduling.

Applications

• Aseptic preparation of cell culture reagents and media in academic and industrial biotechnology labs.
• Weighing and dispensing of high-purity reference standards in QC laboratories supporting pharmacopeial testing (USP , EP 2.6.12).
• Assembly and inspection of microelectronic components sensitive to sub-micron particulates.
• Calibration and handling of optical sensors, interferometers, and metrology tools requiring low-vibration, low-particulate environments.
• Preparation of chromatographic samples and HPLC vials in analytical chemistry workflows.

FAQ

Does this clean bench provide personnel protection?
No. The SW-CJ-1G is a sample-protective device only. It does not protect the operator from hazardous aerosols or vapors. For personnel or environmental protection, a Class II biological safety cabinet must be used.
What is the recommended HEPA filter replacement interval?
Under typical laboratory use (8 hrs/day, 5 days/week), the H14 HEPA filter should be replaced every 18–24 months or after 7,500–10,000 operating hours—whichever occurs first—as verified by in-situ filter integrity testing (e.g., DOP/PAO scan per ISO 14644-3).
Can the UV lamp be operated while the fan is running?
No. The unit incorporates a mechanical safety interlock that automatically deactivates the UV lamp when the front sash is opened above 50 mm or when airflow is interrupted.
Is the SW-CJ-1G suitable for ISO Class 4 (10-grade) environments?
No. Its certified performance aligns with ISO Class 5 (100-grade) conditions. Achieving higher cleanliness classes requires additional room-level engineering controls and stricter procedural discipline.
Does the unit include validation documentation?
Factory-installed units ship with a Certificate of Conformance and basic IQ/OQ test reports. Full commissioning—including particle count verification, airflow uniformity mapping, and illumination measurement—must be performed on-site by qualified personnel per ISO 14644-3.