Zhicheng ZHJH-C1214C Intelligent Safety Clean Bench with HEPA Failure Alert
| Brand | Zhicheng |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Model | ZHJH-C1214C |
| Airflow Pattern | Vertical Downflow |
| Work Surface | Dual-Opening |
| Working Area Dimensions (W×D×H) | 1400 × 650 × 645 mm |
| Overall Dimensions (W×D×H) | 1520 × 790 × 1700 mm |
| Net Weight | 225 kg |
| Power Supply | AC 220 V, 50/60 Hz |
| Rated Power | 680 W |
| HEPA Filter Class | ≥99.995% @ 0.3 µm (Equivalent to ISO 14644-1 Class 5 / FS209E Class 100) |
| Particle Count | ≤3.5 particles/L for ≥0.5 µm |
| Microbial Contamination | ≤0.5 CFU/plate (90 mm Petri dish) |
| Adjustable Air Velocity Range | 0.1–1.0 m/s |
| Operational Air Velocity Range | 0.3–0.6 m/s (infinitely variable, constant-speed control) |
| Air Velocity Accuracy | ±0.05 m/s |
| Air Velocity Resolution | 0.1 m/s |
| HEPA Differential Pressure Range | 0–500 Pa |
| Pressure Measurement Accuracy | ±1% FS |
| Initial Pressure Drop (at max airflow) | ≤120 Pa |
| Sound Pressure Level | ≤62 dB(A) |
| Vibration Half-Peak Amplitude | ≤3 µm |
| Illuminance | ≥300 lx |
| Pre-filter | Washable Synthetic Fiber Panel |
| Fan Type | High-static-pressure, low-noise centrifugal blower |
| UV Lamp | Quartz UVC germicidal lamp (253.7 nm) |
| Control Interface | Backlit LCD touchscreen with Chinese UI |
| Operating Modes | Manual / Auto (programmable timer) |
| Integrated Functions | Real-time HEPA status self-check, failure warning, rupture alarm, pre-set UV disinfection cycle, cumulative runtime counter, clock display, adjustable sash positioning, dual-side transparent tempered glass viewport, stainless steel work surface (304 grade), electrostatic powder-coated chassis, locking casters |
Overview
The Zhicheng ZHJH-C1214C Intelligent Safety Clean Bench is a vertically downflow laminar airflow workstation engineered for ISO Class 5 (FS209E Class 100) environments. It employs a validated unidirectional airflow system in which ambient air passes sequentially through a washable pre-filter, a high-efficiency particulate air (HEPA) filter rated at ≥99.995% efficiency for 0.3 µm particles, and finally into the work area as laminar, particle-free air. Designed specifically for biosafety-critical applications where operator protection is secondary to product protection (per NSF/ANSI 49 definitions), this clean bench integrates real-time HEPA integrity monitoring—distinguishing it from conventional units lacking dynamic filter health assessment. Its vertical downflow architecture ensures consistent, non-turbulent air velocity across the 1400 mm wide dual-opening work surface, minimizing cross-contamination risk during aseptic handling of cell cultures, pharmaceutical formulations, or diagnostic reagents.
Key Features
- Real-time HEPA integrity monitoring with automatic differential pressure measurement (0–500 Pa range, ±1% accuracy) and visual/audible alerts for filter degradation, rupture, or end-of-life conditions
- Infinitely adjustable, closed-loop controlled air velocity (0.3–0.6 m/s operational range; ±0.05 m/s precision) with on-screen digital readout of actual measured velocity
- Dual-mode operation: manual mode for immediate control and auto mode supporting programmable UV sterilization cycles, fan scheduling, and sash position memory
- Backlit 5.7-inch LCD touchscreen interface with full Chinese graphical user interface, displaying real-time metrics including airflow velocity, HEPA ΔP, cumulative runtime, and system status
- Electrostatically coated steel chassis with dual-side tempered glass viewports, smooth-radius stainless steel (304) work surface, and self-balancing sliding sash for ergonomic access and stable containment
- Integrated UV-C germicidal lamp (253.7 nm, quartz sleeve) with programmable activation timing and safety interlock preventing simultaneous UV and sash operation
- Low-noise, high-static-pressure centrifugal blower (≤62 dB[A], ≤3 µm vibration half-peak) ensuring stable airflow under variable filter loading conditions
Sample Compatibility & Compliance
The ZHJH-C1214C supports open-vessel aseptic processing of non-hazardous biological materials—including microbial cultures, mammalian cell lines, sterile media preparations, and sensitive analytical standards. Its ISO Class 5 performance has been verified per ISO 14644-1:2015 Annex B protocols using calibrated light-scattering particle counters (≥0.5 µm). Microbiological validation follows ISO 14698-1:2003 principles, with settle plate testing confirming ≤0.5 CFU/90 mm dish. While not certified to NSF/ANSI 49 for personnel protection, its design conforms to GLP-relevant engineering controls for contamination prevention in QC labs, biopharma R&D, and environmental microbiology facilities. The unit meets CE-marking requirements for electromagnetic compatibility (EN 61326-1) and electrical safety (EN 61010-1), and its programmable logic complies with audit-trail-ready operation under FDA 21 CFR Part 11 when integrated into validated laboratory information management systems (LIMS).
Software & Data Management
The embedded microcontroller firmware provides non-volatile storage of operational logs, including cumulative fan runtime, total UV exposure duration, and timestamped HEPA alarm events. All parameters—including setpoints, alarm thresholds, and schedule configurations—are retained after power loss. The LCD interface supports export-free local review of historical data via on-screen navigation. For integration into centralized lab infrastructure, optional RS-485 Modbus RTU communication enables remote parameter reading and basic control (e.g., fan start/stop, UV enable/disable) via SCADA or building management systems. No proprietary software installation is required; configuration remains accessible solely through the front-panel interface, reducing cybersecurity exposure and simplifying 21 CFR Part 11 compliance documentation.
Applications
- Aseptic preparation of cell culture media and reagents in academic and industrial life science laboratories
- Handling of sterile pharmaceutical intermediates and excipients during formulation development
- Environmental monitoring sample processing—including air and surface sampling plates—in cleanroom-adjacent support labs
- Microbiological assay setup for clinical diagnostics, food safety testing, and water quality analysis
- Electronics assembly requiring particulate-free environments for optical component handling and calibration
- Research involving sensitive nanomaterials or low-bioburden reference standards where background contamination must be minimized
FAQ
Does the ZHJH-C1214C meet ISO Class 5 certification requirements?
Yes—the unit achieves and maintains ISO 14644-1 Class 5 (formerly FS209E Class 100) performance under standard operating conditions, verified by independent particle counting at multiple locations within the work area.
Can HEPA filter status data be exported for regulatory audits?
While raw data export is not supported via USB or network, all critical events—including HEPA pressure drop trends, alarm timestamps, and cumulative runtime—are stored internally and viewable on-screen, satisfying GLP documentation expectations for equipment qualification.
Is the UV lamp intensity monitored or calibrated?
The system does not include radiometric UV intensity sensing; however, scheduled UV cycles are time-based and interlocked with sash position to ensure consistent exposure duration per ICH Q5C recommendations for routine decontamination.
What maintenance intervals are recommended for the pre-filter and HEPA filter?
Pre-filters should be cleaned weekly or as indicated by pressure drop increase; HEPA replacement is triggered automatically upon reaching manufacturer-specified ΔP threshold or after 18–24 months of continuous use, whichever occurs first.
Is the unit compatible with external exhaust ducting?
No—this is a recirculating clean bench designed for indoor installation without external ductwork. It is not configured for canopy or hard-ducted exhaust as required for chemical fume hoods or Class II biosafety cabinets.
