GR1352 Portable High-Flow Airborne Bioaerosol Liquid Impinger Sampler
| Brand | Guo Ruili Heng |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | OEM/ODM Producer |
| Country of Origin | China |
| Model | GR1352 |
| Pricing | Available Upon Request |
Overview
The GR1352 Portable High-Flow Airborne Bioaerosol Liquid Impinger Sampler is an engineered solution for quantitative collection of viable and non-viable biological particles—including bacteria, fungal spores, viruses, and allergenic bioaerosols—from ambient or indoor air. It operates on the principle of liquid impingement: high-velocity air is drawn through a precisely calibrated nozzle and directed tangentially into a rotating liquid medium (typically sterile buffer or nutrient broth), inducing turbulent mixing that efficiently captures airborne particles via inertial impaction and diffusion. With a nominal sampling flow rate of up to 120 L/min—among the highest in portable bioaerosol samplers—the GR1352 enables statistically robust microbial load assessment in short-duration field campaigns, emergency response scenarios, and routine environmental surveillance where rapid, representative sampling is critical.
Key Features
- High-flow capability (up to 120 L/min) with integrated mass flow control and real-time digital flow monitoring, ensuring consistent volumetric sampling across variable ambient pressure and temperature conditions.
- Compact, battery-powered design (optional external 12 V DC or AC adapter support) with ergonomic carrying handle and ruggedized housing rated IP54 for dust and splash resistance—optimized for field deployment in outdoor, industrial, or healthcare settings.
- Single-stage liquid impinger with 30 mL collection volume, featuring borosilicate glass collection vessel and stainless-steel nozzle assembly for chemical compatibility, thermal stability, and ease of sterilization (autoclavable at 121°C, 20 min).
- Low-noise centrifugal blower (<58 dB(A) at 1 m) and intelligent thermal management system prevent sample desiccation and minimize viability loss during extended operation (continuous runtime ≥6 hours on full charge).
- Onboard data logging (time-stamped flow rate, cumulative volume, battery status, operating temperature) compliant with ISO 14698-1:2003 Annex B requirements for biocontamination monitoring traceability.
Sample Compatibility & Compliance
The GR1352 is validated for recovery of Gram-positive and Gram-negative bacteria (e.g., Bacillus atrophaeus, Pseudomonas fluorescens), fungal conidia (e.g., Aspergillus niger), and model viral surrogates (e.g., MS2 bacteriophage) with ≥85% collection efficiency (tested per ASTM E2864–22). Collection liquid compatibility includes phosphate-buffered saline (PBS), tryptic soy broth (TSB), and viral transport media (VTM), supporting downstream culture-based analysis, PCR, qPCR, and metagenomic sequencing. The device conforms to ISO 21501-4:2018 for aerosol particle sizing instrumentation interface readiness and supports GLP-compliant workflows when paired with audit-trail-enabled software (see Software & Data Management section).
Software & Data Management
The GR1352 interfaces via USB-C or Bluetooth 5.0 with the optional GR-SamplerControl Suite—a Windows/Linux-compatible desktop application that provides remote configuration, real-time telemetry visualization, and automated report generation (PDF/CSV). All operational parameters—including start/stop timestamps, flow calibration logs, and battery discharge curves—are stored with SHA-256 hash integrity verification. Audit trail functionality meets FDA 21 CFR Part 11 requirements for electronic records and signatures when deployed in regulated environments (e.g., pharmaceutical cleanroom monitoring, hospital infection control programs). Raw log files are exportable for integration into LIMS platforms using standard HL7 or ASTM E1384 message formats.
Applications
- Indoor air quality (IAQ) assessment in hospitals, laboratories, schools, and office buildings—particularly during outbreak investigations or HVAC system validation.
- Environmental bioaerosol baseline studies in agricultural facilities, wastewater treatment plants, and composting operations.
- Field-based biosurveillance for zoonotic pathogen detection (e.g., avian influenza, hantavirus) in wildlife interface zones.
- Validation of air disinfection technologies (UVGI, bipolar ionization, photocatalytic oxidation) via pre- and post-treatment microbial load comparison.
- Research-grade sampling for aerobiology, atmospheric microbiology, and bioaerosol transport modeling under controlled or natural atmospheric conditions.
FAQ
What is the recommended collection liquid volume and type for optimal microbial recovery?
A 30 mL volume of sterile phosphate-buffered saline (PBS) or tryptic soy broth (TSB) is standard; viscosity and surface tension must remain within ISO 8573-1 Class 2 specifications to maintain impingement efficiency.
Can the GR1352 be used for personal exposure monitoring?
No—it is designed for area/ambient sampling; personal sampling requires low-flow (1–5 L/min) devices with cyclone or filter-based collection per ISO 7203 and NIOSH Method 0600.
Is the impinger vessel autoclavable?
Yes—the borosilicate glass collection vessel and stainless-steel nozzle are fully autoclavable at 121°C for 20 minutes; O-rings must be replaced after each sterilization cycle.
Does the device meet international regulatory standards for environmental monitoring?
It complies with ISO 14698-1:2003 (biocontamination control), ISO 21501-4:2018 (instrument interface readiness), and supports implementation of EU GMP Annex 1 (2022) air monitoring requirements when operated within validated protocols.
How often does the flow sensor require recalibration?
Annual recalibration against a NIST-traceable primary standard is recommended; field verification using a dry gas meter (±1% accuracy) should be performed before each critical sampling campaign.
