Huiron HRH-BSA350 High-Flow Bioaerosol Sampler

Overview

The Huiron HRH-BSA350 High-Flow Bioaerosol Sampler is an engineered solution for quantitative collection of viable and non-viable biological particles from ambient and controlled environments. It operates on the wetted-wall cyclonic principle—a well-established aerosol physics mechanism in which sampled air is accelerated tangentially into a cylindrical chamber, generating a high-velocity vortex. Simultaneously, a thin, continuously replenished liquid film coats the inner wall surface. Biological particles—due to their inertia—impact and are captured within this rotating aqueous layer, preserving viability and molecular integrity far more effectively than dry impaction or filtration methods. With a nominal sampling flow rate exceeding 300 L/min, the HRH-BSA350 delivers high volumetric throughput essential for low-concentration bioaerosol detection in large-volume spaces such as transportation hubs, cleanrooms, clinical isolation units, and agricultural facilities. Its compact form factor (245 × 40 × 13 mm), lightweight design (7.3 kg), and integrated battery support field-deployable, long-duration monitoring without external power infrastructure.

Key Features

• Wetted-wall cyclonic collection: Enables high-efficiency (>70%) capture of bioaerosols across the aerodynamically relevant size range of 0.5–10 µm—including bacteria, fungal spores, viruses, and pollen—while maintaining sample viability for downstream culture, PCR, immunoassay, ATP bioluminescence, and flow cytometry.
• Real-time liquid level monitoring & auto-replenishment: Integrated optical sensors continuously track sampling fluid volume (1–5 mL operational range); the system autonomously dispenses from a 500 mL reservoir to sustain uninterrupted operation for over 8 hours.
• Modular, swappable sampling tubes: Each tube is independently sterilizable and replaceable—eliminating cross-contamination risk between sampling sites or time points. Tube geometry is optimized for consistent vortex formation and wall-film uniformity.
• Intuitive embedded interface: Touch-responsive control panel supports programmable start delay, sampling duration, and real-time display of flow rate, ambient temperature, atmospheric pressure, cumulative sampled volume, and timestamps for start/stop events.
• Onboard data logging: All operational metadata—including environmental parameters, volumetric flow history, and system status—are stored internally with timestamp synchronization, supporting traceability and audit readiness per GLP/GMP-aligned workflows.

Sample Compatibility & Compliance

The HRH-BSA350 is compatible with a broad spectrum of post-sampling analytical platforms: standard agar-based microbial culture, quantitative real-time PCR (qPCR) targeting 16S/18S rRNA or pathogen-specific genes, ELISA and lateral flow immunoassays, epifluorescence microscopy with viability dyes (e.g., SYTO 9/PI), and ATP-based bioluminescent quantification. Its performance adheres to GB/T 39990–2021 “Technical Specifications for Particulate Bioaerosol Samplers”, which defines minimum efficiency thresholds, flow stability criteria, and calibration traceability requirements for bioaerosol instrumentation in China. While not certified to ISO 21501-4 or ASTM D6639, its physical collection mechanism aligns with the fundamental principles underpinning those international standards for aerosol sampler evaluation.

Software & Data Management

Data export is supported via USB-C interface in CSV format, enabling direct import into laboratory information management systems (LIMS) or statistical analysis packages (e.g., R, Python pandas). The internal firmware logs all critical acquisition parameters at 1-second resolution, including corrected volumetric flow (temperature- and pressure-compensated), reservoir level, battery voltage, and error flags. Audit trail functionality records user-initiated configuration changes with operator ID and timestamp—supporting compliance with FDA 21 CFR Part 11 requirements when deployed in regulated environments such as pharmaceutical cleanroom monitoring or biosafety level 2+ facility surveillance.

Applications

• Public health surveillance in mass-transit infrastructure (airports, metro stations, bus terminals)
• Indoor air quality assessment in hospitals, operating theaters, and isolation wards
• Process validation and environmental monitoring in ISO Class 5–8 cleanrooms used for medical device manufacturing or aseptic filling
• Border protection and biosecurity screening at customs checkpoints and military entry zones
• Pathogen exposure assessment in livestock barns, poultry houses, and live-animal markets
• Food processing facility hygiene verification—especially where aerosolized spoilage organisms or allergens pose contamination risks

FAQ

What bioaerosol size range does the HRH-BSA350 effectively collect?
It achieves >70% collection efficiency for particles between 0.5 µm and 10 µm aerodynamic diameter—covering most respirable bacteria, fungal conidia, viral aggregates, and larger allergenic particles.
Can the sampling liquid be customized for specific assays?
Yes. The system accepts sterile water, phosphate-buffered saline (PBS), nutrient broths, or RNA stabilization buffers—provided viscosity and surface tension remain within operational limits for stable film formation.
Is the device suitable for unattended overnight sampling?
With its >8-hour battery life, auto-replenishment, and onboard data logging, it supports fully autonomous deployments up to 8 hours; extended campaigns require scheduled manual reservoir refill or AC adapter use.
How is cross-contamination prevented between sampling locations?
By using dedicated, autoclavable sampling tubes per site—and leveraging the system’s tube-detection logic to prevent operation without proper installation.
Does the HRH-BSA350 provide flow calibration certificates?
Calibration is performed using traceable primary standards prior to shipment; users receive a factory calibration report. Field recalibration is recommended annually or after mechanical impact, using a calibrated laminar flow element or rotameter.