Junray ZR-1304 Oil-Based Aerosol Generator
| Brand | Junray |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | ZR-1304 |
| Airflow Range | 0–120 L/min |
| Aerosol Concentration Range | 0–200 µg/L |
| Generation Method | Cold Aerosol Generation |
| Compatible Media | Liquid Paraffin, DOP (Di-Octyl Phthalate), and other oil-based test fluids |
| Particle Size Output | Sub-micrometer to micrometer range |
Overview
The Junray ZR-1304 Oil-Based Aerosol Generator is a precision-engineered cold-generation aerosol source designed for controlled, repeatable production of polydisperse oil-based aerosols in laboratory and industrial cleanroom validation environments. Unlike thermal or atomization-based generators, the ZR-1304 employs a cold nebulization principle—utilizing high-purity compressed air to shear viscous oil media (e.g., liquid paraffin or DOP) into stable, non-volatile droplets without thermal degradation. This ensures consistent particle morphology, minimal volatility loss, and compliance with ISO 14644-3, ISO 21501-4, and GB/T 6167–2007 requirements for filter integrity testing. The instrument delivers aerosol concentrations from 0 to 200 µg/L across a regulated airflow range of 0–120 L/min, enabling quantitative challenge testing of HEPA and ULPA filters in pharmaceutical cleanrooms, medical device manufacturing facilities, and national metrology laboratories.
Key Features
- Cold-generation architecture eliminates thermal decomposition of test oils—preserving chemical integrity and particle size distribution stability
- Integrated dilution airflow control valve enables precise, stepless adjustment of aerosol concentration over full dynamic range (0–200 µg/L)
- Dual-stage filtration on inlet air supply ensures particulate- and oil-free carrier gas—critical for baseline reproducibility
- Modular reservoir with sealed injection port allows rapid, spill-resistant loading of liquid paraffin, DOP, or alternative ISO-compliant challenge agents
- Stainless steel fluid path and corrosion-resistant internal components ensure long-term compatibility with hydrophobic test media
- Compact benchtop footprint (W × D × H: 320 × 280 × 220 mm) with integrated pressure regulator and flowmeter for standalone operation
Sample Compatibility & Compliance
The ZR-1304 is validated for use with standard oil-based challenge agents specified in international filter test protocols—including DOP (di-octyl phthalate), DOS (di-octyl sebacate), and liquid paraffin per ISO 14644-3 Annex B and USP <797>. Its output meets the particle size distribution criteria required for upstream challenge in scanning probe leak detection (e.g., TDA-99M or equivalent photometers). All wetted materials comply with USP Class VI biocompatibility standards. The generator supports GLP/GMP-aligned workflows through documented operational parameters and traceable calibration records. While not intrinsically certified to ATEX or IECEx, it is intended for use in non-hazardous ambient laboratory environments under controlled ventilation per ISO 14644-1 Class 5–8 conditions.
Software & Data Management
The ZR-1304 operates as a hardware-only, manually controlled generator—intentionally omitting embedded electronics or digital interfaces to maximize reliability and minimize maintenance complexity in regulated settings. All operational parameters (inlet pressure, main/dilution flow rates, reservoir fill level) are monitored via analog gauges and calibrated rotameters traceable to NIM (National Institute of Metrology, China) standards. Users maintain manual logbooks or integrate readings into LIMS or electronic batch records via external data capture. For audit readiness, Junray provides a Factory Calibration Certificate (FCC) including as-tested flow linearity, concentration repeatability (±3.2% RSD at 100 µg/L, n=6), and material compatibility documentation—all compliant with ISO/IEC 17025 clause 6.5 requirements for equipment verification.
Applications
- HEPA/ULPA filter integrity testing per ISO 14644-3, EN 1822, and FDA Guidance for Industry: Sterile Drug Products Produced by Aseptic Processing
- Performance validation of cleanroom air handling units (AHUs), laminar flow hoods, and isolators
- Calibration and challenge response verification of optical particle counters (OPCs) and condensation particle counters (CPCs)
- Method development and protocol qualification in QC labs of pharmaceutical, biotech, and medical device manufacturers
- Reference aerosol generation for national metrology institutes conducting inter-laboratory comparison studies
- Training and proficiency testing for ISO 14644-certified cleanroom auditors and HVAC commissioning engineers
FAQ
What oil-based test agents are compatible with the ZR-1304?
Liquid paraffin, DOP, DOS, and DEHS—provided they meet ISO 14644-3 viscosity and purity specifications (≤0.1% volatile fraction).
Does the ZR-1304 require electrical power?
No—it is pneumatically driven only and requires a clean, dry, oil-free compressed air source (minimum 0.6 MPa, dew point ≤ −40°C).
Can the ZR-1304 be used for sodium chloride (NaCl) or PAO-based aerosols?
No—this model is specifically engineered for non-volatile oil-phase generation; NaCl and PAO require dedicated thermal or ultrasonic generators.
Is third-party certification available for the ZR-1304?
Yes—Junray offers optional CNAS-accredited calibration reports and ISO 17025-compliant verification packages upon request.
What maintenance intervals are recommended?
Quarterly inspection of O-rings, annual replacement of fluid-path seals, and biannual recalibration of flowmeters—documented per manufacturer’s Maintenance Log Template (Rev. 2023).
