Labthink C650H Headspace Oxygen Analyzer for Dairy & Food Packaging
| Brand | Labthink |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | C650H Headspace |
| Price Range | USD 1,400 – 7,000 |
| O₂ Measurement Range | 0.2–21% (v/v) |
| O₂ Accuracy | ±0.2% (v/v) |
| CO₂ Measurement Range (optional) | 2–100% (v/v) |
| CO₂ Accuracy (optional) | ±2% (v/v) |
| Sample Volume Required | ≥5 mL (O₂), ≥20 mL (CO₂) |
| Dimensions | 350 × 330 × 200 mm (L×W×H) |
| Weight | 5.5 kg |
| Power Supply | 220 VAC 50 Hz / 120 VAC 60 Hz |
| Interface | RS232 |
| Display | LCD with bilingual (EN/CN) menu interface |
| Data Storage | Internal memory |
| Printer | Integrated thermal micro-printer |
Overview
The Labthink C650H Headspace Oxygen Analyzer is a dedicated, portable gas analysis instrument engineered for precise quantification of residual oxygen (O₂) and optional carbon dioxide (CO₂) concentrations in the headspace of sealed food and pharmaceutical packaging. It operates on the principle of electrochemical sensing—specifically utilizing a proprietary ceramic-based galvanic oxygen sensor that delivers stable, non-consumptive signal output over extended service life. Unlike traditional zirconia or paramagnetic sensors, this solid-state ceramic O₂ sensor requires no reference gas, exhibits minimal drift, and maintains high linearity across its operational range (0.2–21% O₂ v/v). For CO₂ measurement, an optional infrared (IR) or electrochemical sensor module can be integrated, enabling dual-gas analysis in accordance with ASTM F2096 (Standard Test Method for Detecting Gross Leaks in Packaging by Internal Pressurization) and ISO 11607-2 (Packaging for terminally sterilized medical devices). The system draws headspace gas via vacuum-assisted sampling, ensuring representative extraction from flexible pouches, rigid containers (e.g., cans, PET bottles, Tetra Pak), and even small-volume ampoules—making it suitable for QC labs, production line verification, and warehouse stability monitoring.
Key Features
- Proprietary long-life ceramic O₂ sensor with non-consumptive operation, eliminating routine calibration gas requirements and extending sensor service life beyond 24 months under typical use conditions.
- Modular architecture supporting optional CO₂ detection module, allowing configurable single- or dual-gas analysis without hardware replacement.
- Integrated micro-thermal printer and internal data storage capable of retaining >1,000 test records with timestamp, sample ID, and environmental metadata.
- Bilingual (English/Chinese) LCD interface with intuitive menu navigation, designed for rapid operator training and minimal error rate in multi-shift environments.
- Compact, benchtop-portable form factor (350 × 330 × 200 mm; 5.5 kg) optimized for deployment across lab, production floor, and cold-chain logistics checkpoints.
- Microprocessor-controlled vacuum sampling system delivering consistent draw volume (≥5 mL for O₂; ≥20 mL for CO₂) at standard atmospheric pressure, minimizing user-induced variability.
- RS232 serial interface compliant with Labthink’s proprietary PC software (optional), enabling automated data export, statistical process control (SPC) charting, and audit-ready report generation.
Sample Compatibility & Compliance
The C650H accommodates a broad spectrum of packaging formats without modification: flat-bottomed pouches, stand-up pouches, aluminum-laminated sachets, glass jars, metal cans, PET bottles, composite cartons (e.g., Tetra Brik), and pharmaceutical ampoules. Its standard sampling needle assembly is compatible with both soft and semi-rigid packaging; optional accessories—including a hard-container puncture adapter and underwater sampling kit—extend usability to pressurized or moisture-sensitive samples. From a regulatory standpoint, the analyzer supports compliance workflows aligned with FDA 21 CFR Part 11 (when used with validated software and electronic signature protocols), ISO 22000 (Food Safety Management Systems), and EU Regulation (EC) No 1935/2004 (Materials and Articles in Contact with Food). All firmware and calibration procedures are traceable to NIST-traceable gas standards, and raw sensor output adheres to IEC 61000-4 electromagnetic compatibility requirements.
Software & Data Management
When paired with Labthink’s optional PC-based Headspace Analysis Suite (HAS v3.x), the C650H enables full digital workflow integration. The software provides real-time graphing of O₂/CO₂ concentration decay curves, automatic pass/fail flagging against user-defined specification limits (e.g., ≤1.5% O₂ for infant formula packaging), and batch-level statistical summaries (mean, SD, Cp/Cpk). Audit trails record all user actions—including method changes, calibration events, and result edits—with immutable timestamps and operator IDs. Export formats include CSV, PDF, and XML, facilitating ingestion into LIMS (Laboratory Information Management Systems) or ERP platforms. Data integrity safeguards include password-protected configuration access, encrypted local database storage, and optional digital certificate signing for GLP/GMP-regulated environments.
Applications
Primary applications span quality assurance and shelf-life validation across dairy, infant nutrition, confectionery, ready-to-eat meals, and sterile pharmaceuticals. Typical use cases include: verifying modified atmosphere packaging (MAP) gas mix integrity for cheese and processed meats; monitoring O₂ ingress during accelerated aging studies of powdered milk and whey protein isolates; validating seal integrity of retort pouches post-sterilization; assessing headspace composition in nitrogen-flushed coffee bags; and confirming inert gas overlay efficacy in parenteral drug vials. In R&D settings, the C650H supports formulation optimization (e.g., antioxidant dosage trials) and packaging material selection (e.g., EVOH vs. PVDC barrier performance comparison) through repeatable, low-volume headspace interrogation.
FAQ
What gas standards are required for calibration?
The ceramic O₂ sensor is factory-calibrated using certified 0% and 21% O₂ in N₂ gas mixtures (NIST-traceable). Field recalibration is not routinely required but may be performed annually using a two-point calibration kit (sold separately).
Can the C650H measure gases other than O₂ and CO₂?
No—the instrument is purpose-built for O₂ (standard) and CO₂ (optional). It does not support N₂, Ar, or H₂O vapor quantification.
Is the sampling process destructive to the package?
Yes—gas extraction requires needle puncture. However, the standard 0.8 mm stainless-steel sampling needle minimizes structural compromise, especially in laminated or foil-backed materials.
How often does the O₂ sensor require replacement?
Under normal operating conditions (≤8 hrs/day, ambient temperature <35°C), the ceramic sensor maintains ±0.2% accuracy for ≥24 months. Labthink recommends annual functional verification using certified check gases.
Does the device comply with FDA 21 CFR Part 11?
The standalone analyzer does not meet Part 11 requirements; however, when used with HAS v3.x software, configured user roles, electronic signatures, and audit trail logging, it supports Part 11–compliant documentation practices in validated environments.
