The food packaging WVTR (Water Vapor Transmission Rate) tester is a device used to measure the rate at which packaging materials transmit water vapor. This test is critical for food packaging materials because moisture transmission may affect the shelf life and quality of food.

Here are some key points about the WVTR tester:

Working principle:

The WVTR tester usually measures water vapor transmission rate through a humidity sensor or a weight method.

During the test, different humidity conditions are maintained on both sides of the sample, one side is high humidity and the other side is low humidity.

Application areas:

Food packaging: Keep food dry and extend shelf life.

Pharmaceutical packaging: Prevent pharmaceuticals from getting wet.

Other product packaging that requires moisture protection.

Test standards:

Common international standards include ASTM E96, ISO 15106, etc., which specify the specific methods and conditions of the test.

Main parameters:

Test temperature and humidity conditions.

Sample size and thickness.

Test time.

Instrument features:

High precision: Able to accurately measure the water vapor transmission rate.

High efficiency: fast test speed, suitable for testing large quantities of samples.

High degree of automation: modern WVTR testers usually have automatic control and data recording functions.

Using WVTR testers can ensure the quality of food packaging materials, help companies optimize packaging solutions, and enhance the market competitiveness of products.