Youyunpu YP-QA Air Microbial Detection Integrated System

Overview

The Youyunpu YP-QA Air Microbial Detection Integrated System is a purpose-engineered solution for quantitative and size-resolved assessment of viable airborne microorganisms in controlled and ambient environments. It combines two core analytical modules: the YP-QW6 six-stage sieve-plate impactor—designed per Andersen cascade impaction principles—and a dedicated ATP bioluminescence analyzer (model YP-QW6-compatible, not included in base configuration but integrated via standardized data interface). The system operates on inertial impaction physics: aerosol-laden air is drawn at a calibrated flow rate of 28.3 L/min (1 ft³/min) through six sequentially stacked aluminum stages, each featuring precisely engineered orifices (diameters from 0.25 mm to 1.18 mm). As airflow velocity increases with each stage, particles stratify by aerodynamic diameter and impact onto nutrient agar surfaces—mimicking human respiratory deposition patterns from upper (Stages 1–2) to lower (Stages 3–6) airways. This enables simultaneous enumeration and size-classified recovery of culturable bacteria, fungi, and fragile viral surrogates under high-humidity conditions (39–88% RH across stages), preserving viability during collection.

Key Features

• Six-tier Andersen-type impactor architecture with validated particle cut-points: Stage 1 (>7.0 µm), Stage 2 (4.7–7.0 µm), Stage 3 (3.3–4.7 µm), Stage 4 (2.1–3.3 µm), Stage 5 (1.1–2.1 µm), Stage 6 (0.65–1.1 µm)
• High-efficiency capture: ≥98% overall collection efficiency for particles ≥0.65 µm, verified against ISO 14698-1 Annex B reference protocols
• Integrated electronic timer with 1–99 hour range and ±1% accuracy—enabling unattended long-duration sampling for trend analysis
• Low-noise operation (≤60 dB[A]) suitable for laboratory, cleanroom, and clinical settings without acoustic interference
• AC/DC dual-power capability ensures field-deployable continuity during grid instability or mobile monitoring campaigns
• Modular mechanical design: stainless steel frame, anodized aluminum impactor plates, silicone O-ring seals between tiers, and quick-release spring-hook assembly for rapid sterilization and reconfiguration

Sample Compatibility & Compliance

The YP-QA system collects viable microorganisms onto standard 90-mm Petri dishes filled with TSA, SDA, or selective media—fully compatible with ISO 14698-1 (Biocontamination control), ISO 14644-1 (Cleanroom classification), and EU GMP Annex 1 (2022) environmental monitoring requirements. Its six-stage resolution supports particle-size-based risk assessment aligned with USP <1116> and PDA Technical Report No. 13. The impactor’s geometry and flow calibration meet ASTM D6512-00 (Standard Practice for Bioaerosol Sampling) and are referenced in CDC/NIOSH Manual of Analytical Methods (NMAM) Method 0800. All wetted components are autoclavable (121°C, 20 min), and the system supports GLP-compliant documentation when paired with validated electronic logbooks.

Software & Data Management

While the YP-QA hardware operates independently, it interfaces with Youyunpu’s optional CloudLink™ Data Hub (v3.2+) for centralized sample tracking, audit-trail generation, and CFR 21 Part 11–compliant electronic signatures. Raw colony counts per stage are manually entered or scanned via USB-connected digital colony counter (e.g., ProtoCOL 3). The platform calculates mass median aerodynamic diameter (MMAD), geometric standard deviation (GSD), and deposition fraction profiles—exportable as CSV, PDF, or XML for integration into LIMS (e.g., LabWare, Thermo Fisher SampleManager). All instrument logs—including flow verification timestamps, timer activation records, and maintenance history—are stored with immutable hash-secured metadata.

Applications

• Pharmaceutical manufacturing: Grade A–D cleanroom environmental monitoring per EU GMP Annex 1 and FDA guidance
• Hospital infection control: ICU, OR, and isolation room bioaerosol surveillance for Aspergillus, Staphylococcus aureus, and Mycobacterium tuberculosis risk mapping
• Food processing facilities: validation of HEPA filtration efficacy and post-sanitization microbial clearance
• Research laboratories: aerosolized pathogen transmission studies, HVAC system efficiency testing, and antiviral filter certification
• Biocontainment units: routine verification of negative-pressure integrity and personnel protective equipment (PPE) egress zone contamination

FAQ

Is the YP-QW6 impactor compliant with international standards for air microbiology?
Yes—the YP-QW6 design conforms to the dimensional and operational specifications of the Andersen N6 impactor, referenced in ISO 14698-1, ASTM D6512, and EN 13098 for viable airborne microorganism sampling.
Can the YP-QA system be used for virus detection?
It enables recovery of culturable viral surrogates (e.g., MS2 bacteriophage) under high-humidity staging conditions; however, direct RNA/DNA quantification requires downstream qPCR or sequencing—YP-QA provides the pre-analytical enrichment step.
What maintenance is required between sampling sessions?
Impactor plates must be cleaned with 70% ethanol and air-dried; O-rings inspected for compression set; flow calibration verified annually using a NIST-traceable dry-cal gas meter.
Does the system include software for particle size distribution modeling?
Basic MMAD/GSD calculation tools are embedded in CloudLink™ Data Hub; advanced computational fluid dynamics (CFD) modeling requires third-party integration (e.g., ANSYS Fluent via API).