Water Vapour Permeability Testers (WVTR) W413 2.0

The Infrared Water Vapor Transmission Rate Tester W413 2.0 represents an advanced, precision packaging material testing instrument developed in accordance with ASTM and GB standards. This high-end analyser caters to the market demand for assessing the water vapour transmission rate of samples under specific temperature and humidity conditions. It stands as an ideal configuration instrument for evaluating material barrier properties across various industries, including food, medicine, medical equipment, daily chemicals, and photovoltaic electronics.

Test Principle The W413 2.0 employs the infrared method for water vapour transmission rate analysis. The pre-treated sample is secured in the test chamber, divided into high-humidity and low-humidity sides. Compressed air flows on one side of the film, while dry nitrogen (carrier gas) maintains a fixed rate on the other. The resulting humidity gradient causes water vapor to permeate from high to low humidity, and the infrared sensor captures the transmitted water vapor. Parameters such as water vapour permeability are obtained from the sensor's electrical signal output.

Schematic Diagram of Infrared Method

Standards ASTM F1249, GB/T 26253, YBB 00092003, BS EN ISO 15106-2, JIS K7129

Technical Parameters

• Test Range: 0.002~200 g/(m²·24h) (film and sheet)
• Test Precision: 0.0001 g/(m²·24h) (film and sheet)
• Temperature Accuracy: ±0.1℃
  
• Humidity Range: (5~90)%RH, 100%RH
• Humidity Accuracy: ±2%RH
• Test Area: 50.24 cm² (additional adapting piece available, reducing to 0.785 cm²)
• Sample Size: Φ100 mm
• Sample Thickness: ≤3 mm
• Number of Test Samples: 3 pieces
• Carrier Gas: 99.999% N2 (user-provided)
• Carrier Gas Pressure: ≥0.1 MPa
• Carrier Gas Flow: 5~100 mL/min
• Pneumatic Pressure: ≥0.3 MPa
• Gas Supply Port: 1/8 inch metal pipe
• Instrument Size: 700 mm×630 mm×400 mm
• Weight: 60 kg
• Power: 750 W
• Power Supply: AC 220 V, 50 Hz (110V as requested)

Features

• Patented core technology with a high-precision infrared sensor for accurate testing (resolution of 0.0001 g/(m²·24h)).
• New pneumatic control system for automatic sample clamping with excellent sealing performance.
• Precise temperature and humidity control with semiconductor stabiliser (±0.1℃) and dual airflow (dry and wet) humidity control (±2%RH).
• Three independent chambers for high-throughput testing and efficient data management.
• 11.6-inch color touch screen for convenient control and real-time visualisation of five sets of curves.
• Intelligent operating system designed according to GMP standards, supporting personalised test reports and multiple data output formats.
• Option for offline or online detection, with professional calibration service for accurate and reliable data.
• Connectivity to the IoT platform for network digital management and remote authorisation.

Application Field

• Films: Water vapour transmittance test of various plastic films, composite films, and degradable packaging films.
• Sheet: Water vapour transmission rate test of solid pharmaceutical hard sheets, metal composite sheets and rubber sheets.
• Paper, Cardboard and Their Composites: Water vapour transmission rate test of coated paper, silicone paper, aluminised paper for cigarette packs, paper aluminum-plastic composite sheets, etc.
• Medicinal Patch: Water vapour transmission performance test of medical plasters.
• Package: Customised fixtures for testing water vapour transmission rate of medical polyethylene bottles, sealed bags, medical ointment tubes, infusion hoses, plastic trays, etc.