Junray ZR-2000 Intelligent Air Microbial Sampler

Overview

The Junray ZR-2000 Intelligent Air Microbial Sampler is a microprocessor-controlled, portable active air sampling instrument engineered for quantitative collection and size-fractionated analysis of viable airborne microorganisms—including bacteria, fungi, yeasts, and spores—in environmental, occupational, and controlled laboratory settings. It operates on the principle of inertial impaction, where aerosolized particles are accelerated through calibrated nozzles onto solid or liquid collection media at defined flow rates. This enables physical separation based on aerodynamic diameter—critical for assessing microbial deposition patterns in respiratory zones, evaluating HVAC system efficacy, or validating cleanroom classifications per ISO 14644-1 and EU GMP Annex 1. Unlike passive settling plates, the ZR-2000 delivers reproducible volumetric sampling across variable ambient conditions, supporting compliance with ISO 14698-1 (Biocontamination Control) and USP (Microbiological Evaluation of Cleanrooms).

Key Features

• High-precision electronic mass flow sensor with real-time digital feedback control, maintaining constant volumetric flow within ±2.5% full-scale accuracy across the 5–35 L/min operating range.
• Dual-power architecture: supports AC mains operation (100–240 V, 50/60 Hz) and extended field deployment via integrated high-capacity Ni-MH rechargeable battery (rated for ≥2 hours continuous sampling at 28.3 L/min).
• OLED graphical display with wide viewing angle and −20 to +50 °C operational tolerance—enabling reliable use in cold storage facilities, outdoor monitoring sites, and tropical environments.
• Onboard non-volatile memory stores up to 1,000 sampling records with timestamp, flow rate, duration, temperature, and user-defined batch ID—fully exportable via USB interface to Windows-based data management software.
• Modular sampling head compatibility: seamlessly interfaces with standardized impactor configurations including 2-stage Andersen, 6-stage Andersen, 8-stage Andersen, and impinger-type absorption bottles (e.g., AGI-30, All-Glass Impinger), enabling both culturable particle sizing and liquid-phase recovery.

Sample Compatibility & Compliance

The ZR-2000 accommodates standard microbiological collection substrates: nutrient agar plates (e.g., TSA, SDA), membrane filters (0.45 µm pore size), and sterile liquid media in impingers. Its impaction geometry conforms to ANSI/ASHRAE Standard 160–2019 for bioaerosol sampler calibration and aligns with ISO 8573-7:2019 (compressed air microbiology) when used with validated impactor stages. The device meets Chinese national enterprise standard Q/0212 ZRB004-2011 and supports audit-ready documentation for GLP and GMP environments—particularly where 21 CFR Part 11-compliant electronic records are required for pharmaceutical environmental monitoring programs.

Software & Data Management

A dedicated PC application (Windows 7–11 compatible) enables bidirectional communication: downloading stored sampling logs, configuring start/stop triggers, setting alarm thresholds for flow deviation or low battery, and generating PDF reports compliant with internal QA templates. Audit trail functionality records all parameter changes with operator ID and timestamp. Raw data exports as CSV files for integration into LIMS platforms or statistical analysis tools (e.g., JMP, R). Firmware updates are performed via USB without external programmers.

Applications

• Environmental monitoring in Grade A–D cleanrooms and isolators per EU GMP Annex 1 and FDA Guidance for Industry.
• Occupational health assessments in hospitals, laboratories, poultry farms, and composting facilities.
• Validation of air disinfection systems (UVGI, bipolar ionization) by pre- and post-treatment viable particle counts.
• Food safety verification in processing plants—especially for ready-to-eat (RTE) product zones and packaging lines.
• Research applications in aerobiology, infectious disease transmission modeling, and bioaerosol dispersion studies under controlled chamber conditions.

FAQ

Does the ZR-2000 support regulatory-compliant data integrity requirements?
Yes—it maintains an immutable audit trail for all configuration changes and sampling events, and its data export format supports traceability per ALCOA+ principles.
Can the instrument be calibrated externally using a primary flow standard?
Yes; the built-in thermal mass flow sensor accepts NIST-traceable calibration adjustments via the service menu using a certified dry calibrator (e.g., Gilibrator-2 or Bios International Flowmeter).

Is the OLED display readable under direct sunlight?
The monochrome OLED panel provides high contrast and wide viewing angles (≥160°), ensuring legibility in both low-light laboratories and bright outdoor conditions.

What maintenance intervals are recommended for long-term reliability?
Battery capacity verification every 6 months; impactor nozzle cleaning after each use with isopropyl alcohol; annual sensor recalibration recommended for ISO 17025-accredited labs.

Are replacement Andersen stages and impinger components available from Junray?
Yes—original equipment manufacturer (OEM) parts including stainless steel 2-, 6-, and 8-stage Andersen impactors, silicone gaskets, and AGI-30 glass impingers are stocked and shipped globally.