Labthink C203H Isobaric Film Oxygen Permeability Analyzer
| Brand | Labthink |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | C203H-Labthink |
| Price Range | USD 28,000 – 98,000 |
Overview
The Labthink C203H Isobaric Film Oxygen Permeability Analyzer is a precision instrument engineered for the quantitative determination of oxygen transmission rate (OTR) through plastic films, laminates, coated papers, and flexible packaging materials under controlled isobaric (constant-pressure) conditions. It operates on the principle of coulometric detection—where oxygen molecules permeating through a test specimen are quantitatively reduced at a cathode in an electrochemical cell, generating a current proportional to the OTR. This method ensures high sensitivity, long-term stability, and traceable measurement accuracy without reliance on carrier gas calibration or reference standards. Designed specifically for quality control laboratories in packaging R&D, food & pharmaceutical packaging validation, and material development, the C203H complies with core international test standards including ASTM D3985 (oxygen transmission rate through plastic film and sheeting), ISO 15105-2 (plastics—film and sheeting—determination of gas transmission rate—part 2: coulometric method), and GB/T 19789 (Chinese national standard for OTR testing of plastic films). Its isobaric configuration eliminates pressure differential artifacts common in differential-pressure systems, delivering superior reproducibility for low-permeability barrier materials such as aluminum oxide-coated PET, SiOx-coated films, and multilayer laminates used in medical device pouches and sterile packaging.
Key Features
- Isobaric measurement architecture ensures zero transmembrane pressure gradient—critical for accurate OTR assessment of ultra-high-barrier films where differential-pressure methods induce false flux enhancement.
- Coulometric oxygen sensor with <1 ng/min detection limit and <±2% repeatability (n=10, standard film per ASTM D3985)
- Integrated temperature and humidity control (range: 5–40 °C ±0.1 °C; RH: 0–90% ±1% RH) enabling standardized conditioning per ISO 2528 and ASTM F1249 protocols.
- Automated test cycle management with programmable dwell time, equilibration monitoring, and real-time OTR trending.
- Robust stainless-steel test chamber with dual-seal design and helium leak-tested integrity (<1×10−9 mbar·L/s) to prevent ambient air intrusion during low-OTR measurements.
- Modular sample holder accommodating specimens up to 100 mm × 100 mm with quick-clamp mechanism and uniform clamping force (≥350 kPa) to eliminate edge leakage.
Sample Compatibility & Compliance
The C203H supports a broad spectrum of planar polymeric materials, including monolayer PE/PP films, metallized BOPP, PVDC-coated substrates, EVOH-containing laminates, paperboard composites, and pharmaceutical blister foil structures. Specimen thickness range: 0.01–2.0 mm. Non-planar or textured surfaces (e.g., embossed films) require flatness verification prior to testing. All system hardware, firmware, and software are validated against ISO/IEC 17025 requirements for testing laboratories. The analyzer is compatible with GLP-compliant workflows and supports audit-ready electronic records—including user login tracking, parameter change logs, and raw sensor output archives—as required under FDA 21 CFR Part 11 when deployed in regulated environments.
Software & Data Management
Operated via Labthink’s proprietary OxyTest™ v4.2 software (Windows 10/11 compatible), the C203H provides full instrument control, real-time data visualization, automated report generation (PDF/Excel), and customizable test templates aligned with ASTM, ISO, and internal SOPs. Software features include multi-user role-based access control, digital signature support, electronic audit trail with timestamped entries for all critical actions (e.g., calibration, test initiation, result export), and seamless integration with LIMS via CSV or OPC UA interfaces. Calibration certificates for the coulometric sensor and environmental sensors are traceable to NIM (National Institute of Metrology, China) and NIST-traceable reference gases.
Applications
- Barrier performance qualification of food packaging films (e.g., coffee pouches, snack bags, vacuum-sealed meat trays)
- Accelerated shelf-life modeling for pharmaceutical blister packs and cold-chain transport pouches
- Development and QC of high-barrier coatings (AlOx, SiOx, DLC) on flexible substrates
- Regulatory submission support for FDA 510(k), EU MDR Annex I compliance, and USP packaging integrity assessments
- Root-cause analysis of OTR variability linked to extrusion parameters, coating uniformity, or storage-induced crystallinity changes
FAQ
What is the minimum detectable OTR value for the C203H?
The system achieves a lower detection limit of 0.01 cm³/m²·24h·0.1MPa for standard test conditions (23 °C, 0% RH), verified using certified low-permeability reference films.
Does the C203H require external gas supplies?
No—coulometric detection eliminates the need for carrier gases (e.g., nitrogen or argon); only ambient air is required for the sensor reference side.
Can the instrument perform tests at elevated humidity levels?
Yes—integrated humidity generation supports stable RH control from 0% to 90% at 23 °C, with optional extended RH capability up to 95% via auxiliary module.
Is third-party calibration support available?
Labthink provides annual on-site calibration services with NIM-traceable documentation; users may also engage ISO/IEC 17025-accredited external labs for independent verification.
How is data integrity ensured during long-duration tests (e.g., 7-day OTR monitoring)?
Continuous sensor health monitoring, automatic zero-drift compensation, and redundant data logging to both internal SSD and network share ensure uninterrupted, tamper-evident record retention.
