DRK7891 Portable Headspace Gas Analyzer
| Brand | Drick |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | OEM Manufacturer |
| Country of Origin | China |
| Model | DRK7891 |
| Price | USD 7,000 (FOB Qingdao) |
Overview
The DRK7891 Portable Headspace Gas Analyzer is an engineered solution for rapid, field-deployable quantification of headspace gas composition—primarily O₂ and CO₂—in sealed packaging systems. Designed around a dual-sensor electrochemical detection principle, the instrument operates via direct puncture sampling: a sterile needle penetrates the package seal, allowing headspace gas to flow into an integrated measurement chamber under controlled vacuum-assisted aspiration. The system employs temperature-compensated, factory-calibrated electrochemical cells with cross-sensitivity correction algorithms to deliver repeatable measurements across variable ambient conditions. Unlike benchtop GC-based analyzers, the DRK7891 prioritizes operational speed and portability without sacrificing analytical traceability—making it suitable for in-line quality verification, warehouse audits, and R&D packaging stability studies where immediate gas concentration feedback is critical.
Key Features
- Handheld ergonomic design with integrated rechargeable Li-ion battery (≥8 hours continuous operation)
- Vacuum-assisted sampling mechanism ensuring consistent gas draw rate and minimizing residual air contamination
- Dual-channel real-time display: simultaneous O₂ (0–25% v/v, resolution 0.01%) and CO₂ (0–100% v/v, resolution 0.1%) readings
- On-device data logging (up to 1,000 records) with timestamp, sample ID, and environmental temperature/humidity metadata
- Auto-zero function with built-in reference gas purge cycle to maintain baseline stability between measurements
- IP54-rated enclosure for dust and splash resistance during plant-floor or cold-chain logistics use
- Calibration traceable to NIST-traceable standard gas mixtures; annual recalibration recommended per ISO/IEC 17025 guidelines
Sample Compatibility & Compliance
The DRK7891 supports headspace analysis of rigid and semi-rigid packaging formats including aluminum foil-laminated pouches, PET trays, blister packs, glass vials, and plastic bottles (minimum seal thickness ≥30 µm). It is validated for use with food, pharmaceutical, and medical device primary packaging subject to residual oxygen limits (e.g., <1% O₂ for anaerobic drug products per USP ), modified atmosphere packaging (MAP) verification (ASTM F2096–22), and shelf-life prediction modeling. Instrument firmware and calibration documentation support audit readiness for GMP environments, including electronic record integrity per FDA 21 CFR Part 11 when paired with optional PC synchronization software.
Software & Data Management
The analyzer interfaces via USB-C or Bluetooth 5.0 with the Drick Headspace Manager desktop application (Windows 10/11). This platform enables batch report generation compliant with ISO 15197:2013 formatting requirements, statistical process control (SPC) charting (X̄-R, Cp/Cpk), and export to CSV, PDF, or LIMS-compatible XML. Audit trail functionality logs all user actions—including calibration events, parameter changes, and data deletions—with immutable timestamps and operator ID tagging. Raw sensor output files retain unprocessed voltage-time series for method validation and root-cause analysis during regulatory inspections.
Applications
- Pharmaceutical: Residual oxygen monitoring in lyophilized vials and barrier-coated blisters to prevent oxidative degradation of biologics
- Food & Beverage: MAP verification for fresh-cut produce, cooked meats, and coffee pods to ensure microbial inhibition and flavor retention
- Medical Devices: Sterility assurance testing of Tyvek®-sealed trays by correlating headspace O₂ levels with EO sterilization efficacy
- Contract Manufacturing: Rapid qualification of new packaging lines prior to commercial launch (IQ/OQ support documentation available)
- Academic Research: Kinetic modeling of oxygen ingress through polymer films using time-series headspace data
FAQ
What gases does the DRK7891 measure simultaneously?
O₂ and CO₂ only. The electrochemical sensor array is optimized for these two gases; no provision exists for N₂, H₂, or volatile organic compounds.
Is external calibration gas required for daily use?
No—zero-point verification using ambient air (20.9% O₂, 0.04% CO₂) suffices for routine checks. Full two-point calibration with certified standards is recommended every 30 days or after 200 measurements.
Can the DRK7891 be used on vacuum-sealed packages?
Yes. Its vacuum-assisted sampling compensates for sub-atmospheric internal pressure; the system automatically adjusts aspiration duration to achieve representative sample volume regardless of initial headspace pressure.
Does the instrument meet any international regulatory standards?
It conforms to IEC 61010-1 (safety) and EMC Directive 2014/30/EU. Measurement uncertainty is characterized per ISO/IEC 17025:2017 Annex A.2 for accredited laboratories performing packaging gas analysis.
How is sensor lifespan managed?
Electrochemical cells have a typical service life of 24 months from first activation. The device displays remaining sensor health (%) and triggers a warning at 15% residual capacity, allowing planned replacement without downtime.
