This article is provided by Jinan Saicheng Electronic Technology***.
The water vapor transmission rate tester is an instrument used to detect the moisture permeability of pharmaceutical packaging materials. The working principle is to use the weighing method of the breathable cup to test the principle, at a certain temperature, so that the two sides of the sample form a specific humidity difference, water vapor through the sample in the breathable cup into the dry side, by measuring the change of the weight of the breathable cup with time, so as to find the water vapor transmission rate and other parameters of the sample.
The following points need to be paid attention to when using the water vapor transmission rate tester of pharmaceutical packaging materials:
1.Select representative samples for the preparation of samples, and ensure the best edge of the sample when cutting the sample. The specimen should be flat, uniform and pollution-free, and there should be no holes, needle holes, creases, scratches and other defects, and the sample area should be larger than the permeable area of the breathable cup.
2.When adjusting the sample, adjust the sample state for at least 4 h in accordance with the provisions of GB T 2918-2018 in the standard environment of 23C+2C and 50% 10% relative humidity.
3.When testing, it is necessary to ensure the tightness of the breathable cup and the test chamber, and observe the change of the sample at any time, and record the change of the weight of the sample in the breathable cup.
4.After the test is completed, the test site should be cleaned up in time to ensure the smooth progress of the next test.
Summary. The water vapor transmission rate tester is an important testing equipment to evaluate the quality of pharmaceutical packaging materials, which can help us better understand the moisture permeability of pharmaceutical packaging materials and better improve the comfort of pharmaceutical packaging materials. By using this instrument, we can provide good support and guarantee for our production and R&D.
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