Permeability Analyzer – C303H

Labthink’s C303H permeability analyzer evaluates the water vapor permeability of films, sheets and other packaging materials by determining the water vapor transmission rate (WVTR) using a high-sensitivity infrared sensor.

The instrument has three independent cells that allow three samples to be tested simultaneously under the same conditions. Its system automatically controls flow, temperature and relative humidity during testing, providing independent results for each sample.

Key Features

• Water vapor permeability evaluation.
• Water vapor transmission rate (WVTR) measurement.
• High-sensitivity infrared moisture sensor.
• Three independent test cells.
• Simultaneous testing of three samples.
• Standard test area of 50 cm² per cell.
• Standard measurement range of 0.005 to 40 g/(m²·day).
• Optional range of up to 100 g/(m²·day).
• Resolution of 0.0001 g/(m²·day).
• Repeatability of 0.005 g/(m²·day) or 2%, whichever is greater.
• Automatic control of flow, temperature and relative humidity.
• Standard temperature range of 15 to 50 °C.
• Relative humidity control between 5% and 90%.
• Sujeción automática de las muestras para mejorar el sellado.
• 12-inch touchscreen with Windows operating system.
• Drawer-type cell with automatic insertion and removal.
• Automatic and professional testing modes.
• Display of WVTR, permeability coefficient, temperature and humidity curves.
• Limit alarms and automatic protection functions.
• Optional compatibility with DataShield™, GMP systems and 21 CFR Part 11.
• Optional chamber for testing complete packages.

Measurement Principle

The sample is placed between two chambers with different humidity conditions. Nitrogen with controlled relative humidity flows on one side, while dry nitrogen flows on the other. This difference causes water vapor to pass through the sample from the side with higher humidity to the side with lower humidity.

The dry nitrogen carries the water vapor that has passed through the sample to the infrared sensor. The system analyzes the resulting signal and automatically calculates the water vapor transmission rate, allowing the material’s permeability to be evaluated.

Applications

Suitable for evaluating the water vapor permeability of plastic films, coextruded films, laminates, aluminized materials, paper-plastic composites, aluminum composites, pharmaceutical packaging films and other barrier materials.

It can also test PP, PVC and PVDC sheets, metal foils, rubber, silicon and other materials used in industrial and packaging applications.

With the optional chamber, it can evaluate the permeability of bottles, bags, cans, boxes, drums and other containers made from plastic, rubber, glass, metal or composite materials.

The C303H supports the characterization of materials used in the food, pharmaceutical, medical device, cosmetics, consumer product, photovoltaic energy and electronics industries.

Applicable Standards

ASTM F1249, ISO 15106-2, GB/T 26253, JIS K7129 y YBB 00092003-2015.

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