Based on the testing principle of electrolytic sensor method, W203 2.0 water vapor permeability analyzer is designed and manufactured in accordance with GB/T 21529, ISO15106-3 standard, based on the testing principle of electrolytic method. W203 2.0 is suitable for water vapor transmission performance testing of films, sheets, papers, packages and various materials in the fields of food, medicine, medical equipment, daily chemicals, photovoltaic electronics, etc. Ideal setup for testing the barrier properties of packaging materials in the packaging production industry, whether offline or online.