Labthink C106H Gas Permeability Tester (Differential Pressure Method)

Overview

The Labthink C106H Gas Permeability Tester is an engineered differential pressure–based instrumentation system designed for precise, reproducible measurement of gas transmission rates (GTR), permeability coefficients (P), diffusion coefficients (D), and solubility coefficients (S) in flexible packaging materials. Operating on the fundamental principle of Fick’s first law of diffusion under a controlled transmembrane pressure gradient, the C106H establishes a stable high-pressure (upper) chamber and a continuously monitored low-pressure (lower) chamber—typically evacuated to ≤10 Pa—to quantify gas flux through planar specimens. This method conforms rigorously to ISO 15105-1, ISO 2556, ASTM D1434, JIS K7126-1, GB/T 1038-2000, and YBB 00082003, making it suitable for regulatory-compliant barrier characterization in pharmaceutical, food, medical device, and industrial packaging R&D and QC environments.

Key Features

• Six independent test chambers with standardized 38.48 cm² active area—triple the throughput of conventional single- or dual-cell instruments—enabling parallel, statistically robust evaluation of up to six identical or dissimilar specimens under identical environmental conditions.
• Rainbow Bridge™ test chamber architecture with 360° circumferential air circulation ensures uniform thermal distribution and exceptional temperature stability (±0.15 °C) across all chambers, critical for evaluating temperature-dependent permeation behavior per ISO 15105-2.
• Imported high-precision vacuum transducers (0.01 Pa resolution) and ultra-low-leakage pneumatic control valves deliver measurement capability down to 0.01 cm³/m²·24h·0.1MPa—validated for ultra-high-barrier substrates such as SiOₓ-coated PET, AlOₓ-laminates, and multilayer EVOH structures.
• Integrated vacuum pump (ultimate vacuum ≤0.2 Pa) with automated start/stop logic eliminates manual intervention, reduces operator error, and extends service intervals while maintaining consistent chamber conditioning cycles.
• Proprietary auto-compensation pressure regulation maintains high-side pressure within ±0.2 kPa over extended test durations—essential for accurate determination of steady-state permeation flux and minimizing transient artifacts in low-flux measurements.
• 12-inch Windows-based touchscreen HMI enables full local control, real-time curve visualization (GTR vs. time, P vs. T, dP/dt profiles), and one-touch initiation of standardized or user-defined test protocols—including ramped temperature or stepped pressure sequences.

Sample Compatibility & Compliance

The C106H accommodates rigid and flexible sheet materials up to 3 mm thickness and 11.2 cm × 11.2 cm dimensions, including polymer films (LDPE, PP, PET, PA, EVOH), metallized laminates (Al foil/PET, AlOₓ/PET), paperboard composites, rubber sheets, and silicon wafers. Its modular gas handling interface supports O₂, N₂, and CO₂ out-of-the-box; hazardous gases (H₂, CH₄) are supported via optional explosion-proof fittings and gas-specific calibration protocols. All hardware and firmware comply with electromagnetic compatibility (EMC) directives (IEC 61326-1) and electrical safety standards (IEC 61010-1). Optional CFR 21 Part 11–compliant software packages include full audit trail logging, electronic signatures, role-based access control, and data integrity validation—fully aligned with GLP and GMP documentation requirements.

Software & Data Management

Labthink’s proprietary PermeData™ software (v4.x) provides comprehensive instrument control, real-time monitoring, and post-test analysis. It generates ASTM-compliant reports with embedded metadata (operator ID, calibration status, environmental logs), exports raw pressure/time datasets in CSV and Excel formats, and supports trend analysis across batches or material lots. The system records full test history—including vacuum ramp curves, pressure stabilization events, and endpoint detection logic—with timestamped entries traceable to system clock and NTP-synchronized network time. For enterprise integration, optional DataShield™ module adds encrypted database storage, automatic backup to network drives, and API-enabled data export to LIMS or MES platforms.

Applications

• Pharmaceutical packaging: Quantifying O₂ transmission through blister lidding foils and cold-forming aluminum sheets per USP and EP 3.2.1.
• Food packaging development: Validating shelf-life models for modified atmosphere packaging (MAP) by measuring CO₂/N₂ permeability in coextruded polyolefin structures.
• Medical device sterility assurance: Characterizing microbial barrier performance of Tyvek®-based pouches and peelable lids under accelerated aging conditions.
• Advanced materials R&D: Correlating nanostructured coating morphology (e.g., graphene oxide layers) with measured permeability reduction factors at sub-ambient and elevated temperatures.
• Regulatory submission support: Generating ISO 15105-1–aligned datasets for FDA 510(k) dossiers or EU MDR technical files requiring documented barrier verification.

FAQ

What gas types can be used with the C106H without modification?
Standard configurations support O₂, N₂, and CO₂. Other gases—including H₂ and CH₄—require factory-installed gas-specific sensors, sealed manifolds, and updated safety interlocks.
Is humidity control integrated into the base model?
Relative humidity is not controlled in the standard C106H; however, RH conditioning (5–90% ±2% RH) is available as a factory-customized option with integrated saturated salt chambers and PID-controlled humidification.
How does the six-chamber design impact measurement uncertainty?
Each chamber operates independently with dedicated pressure transducers and thermal regulation—eliminating cross-talk and enabling statistical assessment of intra-batch variability per ISO 5725 guidelines.
Can the C106H validate compliance with FDA 21 CFR Part 11?
Yes—when equipped with the optional CFR 21 Part 11 software package, the system meets all requirements for electronic records and signatures, including audit trails, access controls, and data integrity verification.
What maintenance intervals are recommended for the vacuum pump and pneumatic valves?
The imported vacuum pump requires oil replacement every 2,000 operational hours; pneumatic valves undergo functional verification during annual calibration—no routine lubrication is needed due to sealed, maintenance-free actuator design.