A brief introduction to the test method of water vapor transmittance of medical plastic bottles

Key words: medical plastic bottle, moisture resistance, water vapor permeability Medical plastic bottle is gradually replacing medical glass bottle with its advantages of light weight, high strength, good sealing and pressure resistance, and is widely used in the packaging field of oral solid medicine and liquid medicine Water vapor is an important factor affecting the quality and safety of drugs In order to prevent the influence of water vapor on drugs, plastic bottles for medicine should have good moisture resistance performance to ensure the quality and safety of products In this paper, the water vapor transmission test method of medical plastic bottles is introduced simply by combining with the perme Bomi W3 / 330 water vapor transmission test system of Labthink blue light Water vapor transmittance mainly refers to the barrier effect of medical plastic bottles on water vapor The quality of moisture resistance directly affects the product quality within the shelf life of drugs, and it is also an important factor in the analysis of shelf life The test can solve the problem of damp and mildew caused by water vapor sensitivity Labthink blue light W3 / 330 water vapor transmittance test system, electrolytic sensor method test principle, the equipment adopts the technology of three test chambers integrated block, computer control, full-automatic test, after the sample is clamped, click the test to fully automatic test, automatically realize the control of humidity, temperature, flow rate and other indicators, and automatically judge and issue a report after the test The instrument can also be connected to 9 satellite machines to complete the test of 30 samples at a time It has reached the international advanced level in terms of operation automation, test efficiency, detection resolution and detection lower limit, and many indicators still maintain the first link The test process is roughly as follows: place the pre-treatment sample of the blister in the test chamber, the nitrogen with a certain humidity flows outside the blister package, and the high-purity nitrogen flows inside the blister package Due to the existence of the humidity gradient, the water vapor molecules diffuse through the film from the outside of the blister to the high-purity nitrogen inside, and are carried to the sensor by the flowing nitrogen The measured water vapor concentration is analyzed to calculate the water vapor transmittance and other parameters, so as to evaluate the moisture resistance of the test sample The test schematic diagram is as follows: of course, after ensuring that the water vapor transmission index of the pharmaceutical plastic bottle package is qualified, other indexes such as moisture resistance and tightness need to be controlled to ensure the quality of products within the shelf life For more information about related testing instruments, you can log in Jinan Languang to check the specific information or call for consultation Jinan Languang Electromechanical Technology Co., Ltd is willing to enhance exchanges and cooperation with enterprises and institutions in the industry.