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Medicinal plastic bottle barrier performance testing project

Carrie Mar 20,2019 Share this post:

Commonly used testing items for barrier properties of medicinal plastic bottles include water vapor permeation detection and oxygen transmission rate monitoring. The water vapor permeation test is to place a pre-treated medicinal plastic bottle in the test chamber, and a certain humidity of nitrogen flows on the outside of the plastic bottle. Due to the humidity gradient, the water vapor molecules pass through the film from the outside of the plastic bottle. The high-purity oxygen diffused to the inside is analyzed by the flowing nitrogen gas to the water vapor concentration measured by the sensor, thereby calculating the water vapor transmission rate and the like to evaluate the water vapor permeation of the test pharmaceutical plastic bottle.

plastic bottle barrier performance

The oxygen transmission rate test uses the principle of equal pressure law, and the attached easy-to-test accessories can help companies to detect the oxygen permeability index of medicinal plastic bottles. The pre-treated blister sample is placed in the test chamber and oxygen flows outside the pharmaceutical plastic bottle. High-purity nitrogen flows inside the plastic bottle. Due to the concentration gradient of the cation, oxygen molecules diffuse through the film from the outside of the bottle to the inside of the high-purity nitrogen, and are carried by the flowing nitrogen to the sensor through the oxygen concentration measured by the sensor. The analysis is performed to calculate parameters such as the oxygen permeability of the deaerator to evaluate the oxygen barrier performance of the test sample.

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