Labthink provides expert insight and comprehensive solutions for food packaging including water vapor barrier testing. W3/230 Water Vapor Permeability Tester is one of this food packaging testing instrument, which is used to measure water vapor barrier property of packaging materials.

Testing Method
Based on infrared sensor method , conforming to ASTM F1249, ISO 15106, TAPPI T557

It has three test modes and is applicable to various materials with high, medium and low water vapor permeability. It is also embedded with high precision infrared sensor, which provides a wide test range of 0.001~1000g/m2·24h and durable service life.

Applications
Plastic films, sheeting , paper and paperboard, packages and other barrier material and packages

Procedure
Test specimen is mounted in the diffusion cell, which is subsequently divided into a dry chamber and a controlled-humidity chamber. The dry side of the specimen is swept by a flow of dry nitrogen, and the water vapor permeating through the specimen from the controlled-humidity chamber is carried by dry nitrogen to the infrared sensor where proportion electrical signals will be generated. The water vapor transmission rate is obtained by analyzing and calculating the electrical signals. For package samples, dry nitrogen flows inside the package, where moisturized nitrogen flows outside.

Professional Technology
1. Employed Labthink patent design of three diffusion cells integrated in one instrument for individual or multiple tests
2. Can be connected with 9 satellite systems, including Moisture Testing Instruments
3. Controlled by Computer with professional software
4. Fast and easy to use equipment
5. Adjustable temperature and humidity
6. Referral films available

Technical Specifications:
1. Test Range: 0.001~100 g/m2·24h (Standard)
2. Specimen Size: 108 mm x 108 mm
3. Number of Specimen: 3 (Independent results for each specimen)
4. ExtensionL No less than 10 satellite instruments
5. Specimen Thickness: ≤3 mm
6. Test Area: 50 cm2 /
7. Temperature Range: 15°C~55°C (standard)
8. Temperature Accuracy: ±0.1°C (standard)
9. Humidity Range: 0%RH, 35%RH~90%RH, 100%RH
10. Humidity Accuracy: ±1%RH