Labthink C650B Portable Headspace Oxygen and Carbon Dioxide Analyzer
| Brand | Labthink |
|---|---|
| Model | C650B |
| Type | Portable Headspace Gas Analyzer |
| Measurement Principle | Electrochemical (O₂), NDIR Infrared (CO₂, optional) |
| O₂ Range | 0–100% vol |
| O₂ Resolution | 0.1% |
| O₂ Accuracy | ±0.3% |
| CO₂ Range (optional) | 0–100% vol |
| CO₂ Resolution | 0.01% |
| CO₂ Accuracy | ±(0.03% + 5% of reading) |
| Sampling Volume | 6–8 mL (O₂), 15 mL (CO₂) |
| Dimensions | 220 × 110 × 70 mm |
| Weight | 0.6 kg |
| Power | 100–240 VAC, 50/60 Hz |
| Sensor Lifespan | ~2 years (O₂), >15 years (CO₂) |
| Data Storage | 1200 records |
| Compliance | ASTM F2096, ISO 11607-2, USP <1207>, GB/T 28118 |
Overview
The Labthink C650B Portable Headspace Oxygen and Carbon Dioxide Analyzer is an engineered solution for non-destructive, real-time gas composition analysis within sealed packaging. Designed for controlled atmosphere packaging (CAP) and modified atmosphere packaging (MAP) quality assurance, the instrument employs dual-sensor electrochemical detection for oxygen (O₂) and optional non-dispersive infrared (NDIR) spectroscopy for carbon dioxide (CO₂). Its compact, handheld architecture enables rapid in-line verification at production stations, warehouse inspection points, or laboratory benchtops—without requiring sample destruction or chamber evacuation. The system draws a defined volume of headspace gas via integrated micro-pump aspiration, delivering it directly to calibrated sensors housed in a thermally stabilized flow path. Signal processing algorithms convert raw voltage outputs into volumetric concentration percentages, with traceable linearity across full 0–100% ranges. This measurement approach aligns with regulatory expectations for residual gas validation under ISO 11607-2 (packaging validation), ASTM F2096 (leak detection by bubble emission), and USP (package integrity testing), supporting GMP-compliant documentation workflows.
Key Features
- Handheld ergonomic design with single-hand operation and IP54-rated enclosure for industrial environments
- Auto-calibration function using ambient air reference (O₂) and certified span gas (CO₂, optional), compliant with ISO 8573-1 purity verification protocols
- Integrated pressure transducer for simultaneous vacuum level assessment (±0.5 kPa resolution), enabling correlation between residual gas concentration and seal integrity
- Patented gold-coated optical cavity and solid-state LED/detector array for CO₂ sensing—eliminating moving parts and drift-prone filters
- Industrial-grade capacitive touchscreen with glove-compatible interface; firmware upgradable via USB or remote maintenance port
- Battery-free operation powered by universal AC input (100–240 V, 50/60 Hz); no internal rechargeable battery to degrade or require replacement
Sample Compatibility & Compliance
The C650B accommodates rigid and flexible packaging formats including pouches, stand-up bags, aluminum foil laminates, PET/PE trays, metal cans, glass jars, Tetra Pak® cartons, and pharmaceutical ampoules. It supports both atmospheric and sub-atmospheric headspaces, with sampling validated per ASTM D3078 (leak detection) and GB/T 28118-2011 (food packaging gas analysis). All sensor modules meet RoHS Directive 2011/65/EU and are CE-marked for electromagnetic compatibility (EN 61326-1). Data acquisition complies with ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available) and supports audit-ready export for FDA 21 CFR Part 11 compliance when used with optional Labthink Control Software (v4.2+).
Software & Data Management
The analyzer stores up to 1200 test records onboard—including timestamp, operator ID, sample ID, O₂/CO₂ values, pressure reading, and environmental temperature. USB-C interface enables direct transfer to Windows-based systems running Labthink Control Software, which provides statistical process control (SPC) charts, batch trending, PDF report generation, and CSV export for LIMS integration. Optional wireless thermal printer (model LP-200) delivers on-demand hardcopy output with embedded device serial number, calibration due date, and GLP header. Firmware updates preserve historical calibration coefficients and user-defined test templates across versions.
Applications
Primary use cases include MAP package qualification for dairy powders, roasted coffee, baked goods, ready-to-eat meals, and sterile medical device pouches. In pharmaceutical manufacturing, it verifies inert gas purge efficacy in blister packs and vials prior to lyophilization. Beverage producers apply it to assess CO₂ retention in carbonated drink cans and PET bottles post-filling. Food safety auditors deploy it during HACCP verification to confirm O₂ levels remain below critical thresholds (<0.5% for lipid oxidation prevention). The instrument also supports R&D studies on barrier film performance, seal strength–gas permeation correlation, and accelerated aging protocol development.
FAQ
What gas standards are required for calibration?
Ambient air (20.9% O₂) suffices for O₂ sensor zero/span verification; certified CO₂ span gas (e.g., 5% CO₂ in N₂) is recommended annually for CO₂ module traceability.
Can the C650B measure other gases such as nitrogen or argon?
No—it is optimized exclusively for O₂ and optionally CO₂; quantification of inert gases requires calculation by difference (100% − O₂% − CO₂%) and assumes no other active components.
Is underwater sampling supported out-of-the-box?
Yes—the optional B2226 Submerged Headspace Sampling Module enables leak-tight aspiration from submerged packages, meeting ASTM F2096 bubble test alignment requirements.
How is sensor longevity verified during routine use?
Built-in diagnostics monitor baseline stability, response time, and signal-to-noise ratio; deviation beyond ±5% triggers maintenance alert in software log.
Does the instrument support multi-language reports for global supply chains?
Yes—English and Simplified Chinese UI and report templates are embedded; additional languages may be added via configuration file upload through service mode.
