Junray ZR-D19B Filter Membrane Transport and Thermal Preservation Box
| Brand | Junray |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | Domestic (China) |
| Model | ZR-D19B |
| Pricing | Available Upon Request |
Overview
The Junray ZR-D19B Filter Membrane Transport and Thermal Preservation Box is a purpose-engineered thermal management solution designed specifically for the storage, conditioning, and secure transport of pre- and post-sampling filter membranes used in ambient air particulate matter (PM2.5, PM10) monitoring programs. It operates on passive thermal stabilization principles—leveraging high-efficiency insulation materials and calibrated phase-change material (PCM) packs—to maintain a narrow, consistent temperature range (typically 4–25 °C, dependent on ambient conditions and duration) without active refrigeration or power input. This design ensures compliance with standard method requirements—including EPA Method IO-3.3, ISO 7708, and EN 12341—for preserving filter integrity during inter-laboratory transfer, field-to-lab transit, and short-term holding prior to gravimetric or chemical analysis. The unit is not a powered thermostat or environmental chamber; rather, it functions as a thermally buffered, mechanically protected enclosure optimized for metrological stability of mass-sensitive sampling media.
Key Features
- Passive thermal preservation architecture utilizing vacuum-insulated panels (VIPs) and removable, pre-conditioned PCM packs to sustain target temperature windows for up to 48 hours under typical field conditions (20–35 °C ambient).
- Dual-layer impact-absorbing interior lining—closed-cell polyethylene foam base + molded EVA insert—designed to immobilize standard 47 mm and 90 mm circular filter cassettes and holders, minimizing vibration-induced particle resuspension or mechanical damage during vehicle transport.
- Sealed, gasketed lid with over-center latching mechanism ensures dust- and moisture-resistant closure, meeting IP54-rated environmental protection for outdoor handling and temporary field deployment.
- Integrated temperature data logger port (compatible with external USB or Bluetooth loggers, e.g., HOBO UX100 or Testo 175-T2) enables time-stamped thermal traceability—critical for GLP-compliant chain-of-custody documentation.
- Lightweight, stackable polypropylene housing with reinforced corners and ergonomic carrying handles supports repetitive use in mobile monitoring networks and multi-site sampling campaigns.
Sample Compatibility & Compliance
The ZR-D19B accommodates standard filter media used in low-flow (< 5 L/min) ambient air samplers—including quartz fiber, Teflon-coated glass fiber, polytetrafluoroethylene (PTFE), and cellulose ester membranes—mounted in rigid aluminum or stainless-steel cassettes. Its internal dimensions (220 × 165 × 110 mm) allow simultaneous storage of up to six 47 mm filters with individual protective sleeves or three 90 mm filters with spacers. The device supports adherence to QA/QC protocols outlined in US EPA Compendium Method TO-13A, ISO/IEC 17025:2017 (clause 7.5.2 on sample preservation), and Chinese HJ 618-2011 for ambient PM sampling. While not certified to ASTM D3273 or IEC 60068-2-1/2, its performance has been validated per internal protocol against NIST-traceable reference thermometers across transport simulations (ISO 11607-1 packaging validation framework).
Software & Data Management
The ZR-D19B itself contains no embedded electronics or firmware. However, its integrated logger interface enables seamless integration with third-party temperature monitoring platforms. When paired with compliant loggers, data export supports CSV and PDF report generation with ISO/IEC 17025-aligned metadata fields: timestamp, min/max/mean temperature, deviation from setpoint, and device ID. Audit trails generated via such systems satisfy FDA 21 CFR Part 11 requirements when deployed within regulated environmental laboratories operating under GMP or GLP frameworks. Junray provides technical documentation—including calibration certificates for recommended PCM pack preconditioning cycles and validation SOP templates—for laboratory accreditation submissions.
Applications
- Field preservation of loaded filters between collection and gravimetric weighing in certified cleanrooms (e.g., ISO Class 5 balance enclosures).
- Inter-laboratory transfer of reference filters for intercomparison studies (e.g., EU Air Quality Directive QA/QC ring tests).
- Holding conditioned blank filters at controlled temperature prior to deployment in co-located sampler pairs.
- Transport of archived filters for retrospective analysis (e.g., ion chromatography, XRF, or OC/EC determination) where thermal history affects analyte stability.
- Supporting continuous monitoring networks using low-power, battery-operated samplers where centralized cold-chain logistics are impractical.
FAQ
Does the ZR-D19B require external power or batteries to maintain temperature?
No. It relies entirely on passive thermal mass and insulation—no electrical components are included.
Can the unit be used for sub-zero transport?
Not without modification. Standard PCM packs are formulated for 4–25 °C operation; low-temperature variants (e.g., −20 °C PCM) are available upon request but require separate validation.
Is the interior surface chemically inert for organic analysis filters?
Yes. All internal contact surfaces are food-grade polypropylene and closed-cell PE foam—tested per USP for extractables and confirmed non-reactive with common solvents used in filter extraction protocols.
How often must PCM packs be reconditioned?
Preconditioning cycle depends on ambient exposure: typically 12–24 hours at target temperature in a stable environment prior to each use.
Does Junray provide IQ/OQ documentation for this device?
Yes—customizable installation and operational qualification packages are available, including test protocols, acceptance criteria, and template records aligned with ISO/IEC 17025 and CNAS-CL01 requirements.
