A test system for determining water-vapor transmission rate
The W3/330 is a test system for determining water-vapor transmission rate that is suitable for use with flexible films, sheets, foils and packaging materials. The system’s patented design allows for the simultaneous testing of up to three specimens with independent results. The water-vapor transmission rate is obtained by analyzing and calculating the electrical signals that are generated as the water vapor permeating from the specimen is carried via dry nitrogen over an electrolytic sensor. The system can be easily connected to a maximum of 10 instruments to accomplish up to 30 tests at the same time. Hall 4.2, Stand N36 — Labthink Instruments Co., Jinan, China