ASTM D1653 is a standard test method for Water Vapor Transmission Rate Through Plastic Film and Sheeting Using a Modulated Infrared Sensor.

What does ASTM D1653 measure?

ASTM D1653 measures the water vapor transmission rate (WVTR) through plastic films and sheeting.

What is the difference between ASTM D1653 and ASTM E96?

ASTM D1653 and ASTM E96 both address the determination of coatings' water vapor transmission and permeance. ASTM E96/E96M addresses permeability, but ASTM D1653 does not.

What is the unit of water vapor transmission rate?

WVTR (water vapor transmission rate) is the steady-state rate at which water vapor permeates through a film at specified temperature and relative humidity conditions. Values are expressed in g/100 in2/24 hr in US standard units and g/m2/24 hr in metric (or SI) units.