BS Handheld and Benchtop Airborne Microbial Sampler
| Origin | China |
|---|---|
| Manufacturer Type | Distributor |
| Product Category | Domestic |
| Model | BS |
| Pricing | Upon Request |
Overview
The BS Handheld and Benchtop Airborne Microbial Sampler is a precision-engineered active air sampling system designed for quantitative microbiological monitoring in controlled environments. It operates on the principle of inertial impaction—where airborne microorganisms, carried by a high-velocity airstream, are accelerated through precisely engineered micro-orifices and deposited onto the surface of standard nutrient agar plates (Ø90 mm × 15–18 mm). This method ensures high collection efficiency (>98% for particles ≥0.6 µm) while minimizing microbial overlap and desiccation stress, thereby preserving colony-forming unit (CFU) viability and enabling accurate enumeration after incubation. The handheld unit maintains isokinetic sampling at 0.4 m/s at the inlet—matching typical laminar airflow velocities in ISO Class 5–8 cleanrooms—ensuring representative sampling without turbulence-induced bias. The benchtop variant integrates a high-capacity, low-pulsation diaphragm pump delivering stable 50 L/min flow (±5% accuracy), compliant with EU GMP Annex 1 and ISO 14698-1 requirements for viable particle assessment.
Key Features
- Two-platform architecture: portable handheld unit (2 kg, Ø120 × 300 mm) for spot-checking and flexible deployment; stationary benchtop unit (10 kg, 290 × 220 × 130 mm) for routine, high-volume environmental monitoring.
- Programmable sampling: adjustable volume range from 0.01 to 2.0 m³ (handheld) and time-based cycles from 1 to 60 minutes (benchtop), supporting both volumetric and time-weighted sampling protocols.
- Micro-orifice impactor head: machined from aerospace-grade anodized aluminum with closed-cell surface finish—compatible with autoclaving (121°C, 20 min), ethanol wiping, or hydrogen peroxide vapor (HPV) decontamination.
- Real-time LCD interface: displays cumulative sampled volume, elapsed time, flow rate, battery status (handheld), and error codes—enabling immediate verification of sampling integrity.
- Non-volatile memory storage: retains up to 256 sampling records with timestamp, volume, duration, and operator ID—supporting audit-ready data traceability per FDA 21 CFR Part 11 (when paired with validated software).
- Standardized consumables: accepts universally available Ø90 mm Petri dishes (height 15–18 mm); no proprietary media or adapters required.
Sample Compatibility & Compliance
The BS sampler is validated for use with tryptic soy agar (TSA), Sabouraud dextrose agar (SDA), and other ISO 14698-1–recommended media formulations. Its impactor geometry and flow dynamics conform to EN 13098:2021 (Microbiology of medical devices — Method for determination of microbial contamination of air) and align with USP environmental monitoring guidance. Both units meet electromagnetic compatibility (EMC) standards per IEC 61326-1 and electrical safety per IEC 61010-1. Routine calibration against a primary flow standard (e.g., dry-calibrated mass flow meter traceable to NIST) is recommended every six months or after 200 operational hours.
Software & Data Management
While the BS series operates as a standalone instrument, optional PC-based configuration and data export software (Windows-compatible, USB/RS-232 interface) enables batch report generation, trend analysis, and integration into LIMS or electronic quality management systems (eQMS). Export formats include CSV and PDF, with embedded metadata (sampling location, date/time, operator, environmental conditions). Audit trail functionality logs all parameter changes and data exports—meeting GLP/GMP documentation requirements for pharmaceutical QC laboratories.
Applications
- GMP-compliant environmental monitoring in sterile manufacturing suites (fill-finish, aseptic processing)
- Healthcare facility surveillance: operating rooms, isolation wards, pharmacy compounding areas
- Biotechnology cleanrooms (cell culture, viral vector production)
- Food and beverage production lines (ready-to-eat zones, packaging areas)
- Public health investigations: outbreak source tracing, HVAC system validation
- Research laboratories conducting aerosolized pathogen studies under BSL-2 containment
FAQ
What is the recommended calibration frequency for the BS sampler?
Calibration against a certified flow standard is advised every six months or after 200 operational hours—whichever occurs first—to maintain compliance with ISO/IEC 17025 and internal quality procedures.
Can the handheld unit operate continuously on battery power?
Yes—the integrated rechargeable Li-ion battery supports up to 4 hours of continuous sampling at 100 L/min, with low-power alerts and auto-shutdown to preserve data integrity.
Is the impactor head compatible with gamma irradiation sterilization?
No—gamma exposure may degrade the aluminum oxide layer and compromise orifice dimensional stability; autoclaving or chemical disinfection is preferred.
Does the benchtop model support remote triggering via external control signals?
Yes—via optional TTL-level digital input (0–5 V), enabling synchronization with cleanroom monitoring systems or programmable logic controllers (PLCs).
How is microbial recovery validated for this sampler?
Recovery efficiency is verified using standardized bioaerosol challenges (e.g., Bacillus atrophaeus spores, 1.0–1.5 µm aerodynamic diameter) per ISO 14698-2 Annex B, yielding ≥92% viable recovery across the 0.3–5.0 µm particle size range.
