In modern material science, packaging manufacturing, pharmaceutical and food industries, the water vapor barrier performance of flexible films, rigid sheets and composite materials is a core indicator that directly determines product shelf life, storage stability and service performance. Excessive water vapor penetration will easily cause food deterioration, pharmaceutical failure, electronic component damp damage and packaging material performance degradation. To achieve accurate, efficient and stable water vapor transmission rate (WVTR) detection, the infrared sensor method WVTR tester has become the mainstream high-precision testing equipment in the industry, compliant with international authoritative testing standards.

Working Principle of Infrared WVTR Tester

The instrument adopts the mature and reliable infrared sensor detection principle, which is different from the traditional gravimetric method with long test cycle and low accuracy. The test chamber is divided into a high-humidity wet chamber and a low-humidity dry chamber by the tested sample. During the test, water vapor penetrates through the sample from the wet side to the dry side, and is carried to the high-sensitivity infrared detector by dry carrier gas. The infrared sensor quantitatively identifies and monitors the real-time change of water vapor concentration, converts the concentration signal into accurate digital data, and finally calculates the water vapor transmission rate of the sample through professional algorithm analysis . This non-destructive real-time detection method realizes continuous and automatic testing throughout the whole process, effectively avoiding manual operation errors in traditional testing methods.

Testing equipment：WVTR-E3 Water Vapor Permeability Tester (Infrared method)

Strict Compliance with International Standards

Our infrared WVTR tester is fully developed and calibrated in accordance with global authoritative industry standards, ensuring the accuracy, repeatability and comparability of test data for global users. The compliant standards include:

- ASTM F1249: Standard Test Method for Water Vapor Transmission Rate Through Plastic Film and Sheeting Using a Modulated Infrared Sensor

- ISO 15106-2: Plastics - Determination of water vapour transmission rate of film and sheeting - Part 2: Infrared detection sensor method

- GB/T 26253 & YBB 00092003: Chinese national pharmaceutical and industrial testing standards to meet domestic regulatory certification requirements

All test results can be used for product quality inspection, factory certification, third-party testing and international trade quality verification, supporting enterprise standardized production and market access.

Core Product Advantages

Wide Application Scenarios

The infrared WVTR tester is widely applicable to water vapor barrier performance testing of various materials, covering multiple industries worldwide:

- Packaging Industry: Plastic films, co-extruded films, aluminum foil composite films, paper-plastic packaging materials, flexible packaging bags and rigid packaging containers

- Pharmaceutical Industry: Pharmaceutical blister packaging, medical packaging films, sterile barrier materials, compliant with pharmaceutical packaging testing standards

- Food & Beverage Industry: Moisture-proof packaging materials for snacks, dairy products, dried fruits and frozen food to ensure food fresh-keeping effect

- Electronic & New Energy Industry: Moisture-proof and barrier films for electronic components, battery packaging materials to prevent damp failure

- New Material Industry: Functional barrier sheets, rubber materials, textile composite materials and new waterproof and moisture-proof materials

Conclusion

As a high-efficiency and high-precision professional testing device, the infrared sensor method WVTR tester has completely solved the pain points of low efficiency and poor accuracy of traditional testing methods. With its standardized testing process, stable performance and wide applicability, it has become essential testing equipment for quality control laboratories, manufacturing enterprises, third-party testing institutions and scientific research institutions. It provides reliable and accurate data support for enterprises to optimize material formulas, improve product barrier performance and comply with international quality standards, helping enterprises enhance product market competitiveness.