Labthink C130H Gas Permeability Testing System
| Brand | Labthink |
|---|---|
| Model | C130H |
| Principle | Differential Pressure Method (Manometric) |
| Test Gases | O₂, N₂, CO₂ (customizable for mixed/inflammable gases) |
| Temperature Range | 10–50 °C (±0.05 °C stability) |
| Pressure Range | 10–210 kPa (adjustable high-side pressure) |
| Vacuum Capability | <10 Pa base pressure, 0.2 Pa ultimate vacuum |
| Measurement Range | 0.01–50,000 cm³/m²·24h·0.1MPa |
| Resolution | 0.001 cm³/m²·24h·0.1MPa |
| Sample Size | Φ97 mm (38.48 cm² effective area) |
| Chambers | 3 independent test stations |
| Compliance | ISO 15105-1, ISO 2556, ASTM D1434, GB/T 1038-2000, JIS K7126-1, YBB 00082003 |
Overview
The Labthink C130H Gas Permeability Testing System is a precision laboratory instrument engineered for the quantitative determination of gas transmission properties in flexible packaging materials and barrier films. It operates on the differential pressure (manometric) method — a gravimetrically traceable, first-principles-based technique standardized under ISO 15105-1, ASTM D1434, and GB/T 1038. In this method, a conditioned specimen is sealed between two chambers: a high-pressure test gas chamber (upper) and a low-pressure measurement chamber (lower). After evacuation of the lower chamber to sub-10 Pa vacuum, a controlled pressure differential (10–210 kPa) is established across the sample. The time-dependent rise in pressure within the evacuated chamber is monitored via a high-stability vacuum transducer (0.01 Pa resolution), enabling calculation of oxygen transmission rate (OTR), nitrogen transmission rate (NTR), carbon dioxide transmission rate (CO₂TR), as well as derived thermodynamic parameters — diffusion coefficient (D), solubility coefficient (S), and permeability coefficient (P = D × S). The system is purpose-built for pharmaceutical primary packaging validation, food shelf-life modeling, and advanced barrier material R&D where reproducibility, metrological traceability, and compliance with GLP/GMP data integrity requirements are non-negotiable.
Key Features
- Tri-chamber independent architecture: Three physically isolated test stations operate concurrently with autonomous pressure control, real-time data acquisition, and individual sample loading — enabling throughput optimization without cross-contamination or thermal interference.
- Automated drawer-style test cavity: Motorized, pneumatically actuated sample insertion ensures repeatable clamping force (±1.5% variation), eliminates manual alignment errors, and reduces operator-induced seal failure — critical for ultra-high-barrier films (e.g., AlOx-coated PET, SiOx-laminates).
- High-fidelity vacuum subsystem: UK-sourced dual-stage vacuum pump (ultimate vacuum: 0.2 Pa), integrated with auto-cycle vacuum management logic that initiates/stops pumping based on real-time chamber pressure feedback — eliminating manual intervention and minimizing oil vapor backstreaming.
- 360° forced-air thermal uniformity: Precision PID-controlled air circulation maintains temperature stability within ±0.05 °C across all three chambers at setpoints from 10–50 °C — verified via NIST-traceable calibration ports and compliant with ISO 2556 Annex B thermal homogeneity requirements.
- Dynamic pressure compensation: Proprietary auto-replenishment algorithm continuously monitors high-side pressure drift and injects incremental gas volume to maintain constant ΔP (<0.2 kPa deviation), ensuring adherence to the fundamental assumption of Fickian steady-state diffusion during measurement.
- Modular gas handling: Supports single-gas (O₂/N₂/CO₂), binary mixtures, and custom hazardous gas configurations (e.g., H₂, CH₄) via optional explosion-proof solenoid valves, stainless-steel wetted path components, and certified leak-tight fittings (ISO 8573-1 Class 0).
Sample Compatibility & Compliance
The C130H accommodates rigid and flexible planar specimens up to 97 mm diameter (38.48 cm² test area), including polymer films (LDPE, PP, PET), metallized laminates, aluminum foils, coated papers, blister foils (PVC/PVDC, cold-forming aluminum), and pharmaceutical pouch materials (e.g., Tyvek®/foil composites). All test protocols align with regulatory expectations for barrier validation: data audit trails meet FDA 21 CFR Part 11 requirements when equipped with optional DataShield™ software; raw pressure-time datasets are stored with full metadata (operator ID, calibration certificate IDs, environmental logs); and hardware-level temperature/pressure verification ports support routine IQ/OQ/PQ execution per ICH Q5C and USP <661>. The system is certified to ISO/IEC 17025:2017 for testing competence when operated within Labthink’s accredited calibration framework.
Software & Data Management
Built on an embedded Windows-based platform, the C130H integrates instrument control, real-time visualization, and report generation into a single deterministic runtime environment — eliminating external PC dependencies and associated cybersecurity vulnerabilities. The GUI displays synchronized time-series plots: pressure vs. time (log-linear), transmission rate vs. time (linear), and chamber temperature vs. time (with statistical overlay of min/max/mean). Raw sensor outputs (mV → Pa conversion) are logged at 10 Hz with timestamped metadata. Advanced analysis modules include Arrhenius fitting for temperature-dependent permeability extrapolation, Fickian/non-Fickian diffusion model selection, and ASTM E1530-compliant uncertainty propagation per GUM (Guide to the Expression of Uncertainty in Measurement). Optional DataShield™ enables HL7/FHIR-compliant integration with LIMS, MES, and ERP systems; supports electronic signatures, role-based access control (RBAC), and automated backup to network-attached storage (NAS) or cloud repositories with AES-256 encryption.
Applications
- Pharmaceutical packaging: Quantifying OTR of blister lidding foils, sachet laminates, and vial stopper coatings to ensure sterility maintenance over shelf life (YBB 00082003 compliance).
- Food packaging R&D: Correlating CO₂TR of modified-atmosphere packaging (MAP) films with product respiration rates and spoilage kinetics.
- Barrier coating development: Benchmarking SiOx, AlOx, and DLC coatings on PET substrates under accelerated aging conditions (40 °C/75% RH).
- Regulatory submission support: Generating GLP-compliant reports for FDA 510(k), EMA CPMP/QWP/389/98, and PMDA MHLW Notification 178 dossier packages.
- Quality control labs: Routine OTR verification of incoming roll stock against AQL sampling plans per ISO 2859-1.
FAQ
What standards does the C130H comply with?
The system meets ISO 15105-1 (gas transmission rate), ISO 2556 (differential pressure method), ASTM D1434 (O₂ permeability), GB/T 1038-2000 (Chinese national standard), JIS K7126-1 (Japanese industrial standard), and YBB 00082003 (Chinese pharmaceutical packaging standard).
Can the C130H test humidified gases?
Yes — with optional integrated humidity control module (electrolytic or permeation-type), the system delivers precise RH control (10–90% RH) in the high-pressure chamber while maintaining thermal equilibrium and avoiding condensation on sensors.
Is calibration traceable to national standards?
All vacuum sensors are factory-calibrated against NIST-traceable barometric references; temperature sensors are verified using PT100 probes calibrated to ITS-90; pressure transducers carry UKAS-accredited certificates valid for 12 months.
How is data integrity ensured for regulated environments?
With optional GMP-compliant firmware, the system enforces electronic signatures, audit trail logging (including parameter changes and user actions), and immutable data archiving — satisfying FDA 21 CFR Part 11, EU Annex 11, and PIC/S GMP requirements.
What maintenance is required for long-term accuracy?
Recommended quarterly verification using certified reference films (e.g., SRM 1472 from NIST); annual recalibration of vacuum and pressure sensors; biannual replacement of vacuum pump oil and inlet filters per ISO 8573-1 Class 4 specifications.
