Lenge Purification Equipment Co., Ltd. and Jiangnan University established the Institute of materials and technology, and the graduate-student workstation. With advanced imported test equipment, standard test procedures and testing proposals, we can provide customers with various test and validation services, such as chemical compatibility, extractables, adsorption, bacterial challenge, bacterial viability, integrity, recycle use, etc.
For different customers, we simulate the produce process under the most disadvantage conditions, and make qualitative and quantitative estimation of dissolution by imported infrared spectrometer, ultraviolet spectrophotometer, HPLC and other equipment, thus make the quantitative analysis of the product absorbed on the membrane.
Due to the hydrophobic property, organic solvent need to be used in bubble point test as wetting agent. Use pure water will avoid the solvent cleaning and residue.
Principle and method selection
At low pressure, the hydrophobic membrane prevents the water through, but there's still a little measurable water evaporation flow when lower than water breakthrough pressure (water is through by pressed), which is similar to the diffusion flow of the wetted membrane.