Accurate measurement of water vapor transmission rate (WVTR) is critical for evaluating the barrier performance of packaging materials. The infrared-based water vapor transmission tester is a cutting-edge instrument designed to test WVTR for packaging components, containers, and films under controlled temperature and humidity conditions. Ideal for high-, medium-, and low-barrier materials, this device ensures reliable data for quality control and research applications.
Testing Principle
The instrument operates on the infrared detection method. A packaged sample is mounted on a dedicated holder, with its opening sealed. Dry nitrogen is introduced into the package, while the exterior is exposed to a humid environment. Driven by the humidity gradient, water vapor permeates through the sample into the nitrogen stream. The vapor-laden gas is then transported to an infrared sensor, which quantifies the moisture content via electrical signals. This process calculates the sample's WVTR with high precision.
Compliance with Global Standards
The tester adheres to multiple international standards, including:
- GB/T 31355-2014 and GB/T 26253-2010 (China)
- YBB 00092003 and Chinese Pharmacopoeia IV 4010 (Pharmaceuticals)
- ASTM F1249, ISO 15106-2, and JIS K7129 (Global)
This compliance ensures compatibility with regulatory requirements across industries.
Technical Specifications
- Measurement Range:
- Packaging components: 0.00001–0.5 g/(pkg•day)
- Films: 0.002–100 g/(m²·24h)
- Resolution: 0.0001 units
- Temperature Control: 15–45°C (±0.5°C accuracy)
- Humidity Control: 20–95% RH (±2% RH accuracy)
- Sample Capacity: 1 unit per test
- Gas Supply: 0.1–0.2 MPa pressure, 1/8-inch metal interface
Key Features
1. Innovative Package Holder Design
- Detachable testing chambers enable rapid sample replacement.
- Customizable holders accommodate diverse packaging shapes.
2. Precision Climate Control
- Semiconductor cooling plates ensure ±0.5°C temperature stability.
- Automated humidity management maintains ±2% RH accuracy.
3. Extended Testing Capabilities
- Large internal water tanks support long-duration tests (e.g., photovoltaic modules).
- Broad measurement range suits varying barrier levels.
4. Smart Operation & Compliance
- User-friendly interface with GMP-compliant features: audit trails, role-based access, and electronic signatures.
- Real-time data visualization, customizable test parameters, and automatic shutdown.
- USB data export and compatibility with lab IoT platforms for remote diagnostics.
5. Calibration & Support
- Traceable calibration using certified reference materials.
- Integration with laboratory networks for centralized data management.
Applications
This tester is widely used in:
- Food Packaging: Ensures shelf-life stability by measuring moisture ingress.
- Pharmaceuticals: Validates blister packs and medical container barriers.
- Electronics: Protects moisture-sensitive components during storage.
- Advanced Materials: Evaluates films for solar panels and industrial barriers.
Conclusion
The infrared-based water vapor transmission tester combines advanced sensor technology, precise environmental control, and intelligent software to deliver efficient, reliable WVTR measurements. Its compliance with global standards and adaptability to diverse packaging forms make it indispensable for industries requiring rigorous barrier performance validation. By offering both high accuracy and operational flexibility, this instrument sets a benchmark in quality assurance for packaging innovation.
