Polypropylene membrane filters are constructed of 100% virgin polypropylene media. As a filter medium, Polypropylene membranes demonstrate low extractables, high thermal stability, relatively fast liquid flow rates and broad chemical compatibility, these features make them ideal for the filtration of mobile phase, general filtration of aqueous and organic/aggressive solvents, clarification and prefiltration.

Polypropylene membranes are naturally hydrophobic and has high air particle retention efficiency, therefore are widely used in air venting and gas filtration applications. Polypropylene filters play a crucial role in environmental monitoring by providing effective gas filtration. In air quality monitoring, the PP membrane's small pore size and high air permeability make it ideal for capturing even the smallest particles, ensuring a clean and safe environment.

In laboratory applications, hydrophilic polypropylene membranes are commonly used in chromatography analysis, particularly as a built-in filter membrane in syringe filters. These PP filters help separate mixtures of components based on their size, shape, and other properties. By applying a specific pressure to the sample solution through the membrane, molecules larger than the pore size are entrapped on the surface of the membrane, allowing for easy and accurate detection of the desired analytes. Hydrophilic polypropylene membranes are also frequently used for filtering organic solvents used in chromatography analysis. They provide a reliable barrier between the solvent and the sensitive detectors or reagents, preventing contamination and maintaining the integrity of the analysis. Similarly, polypropylene membranes can be used for sample filtration in high-performance liquid chromatography (HPLC) systems to remove impurities or interferents before analysis. In cell culture experiments, polypropylene membranes are often employed for pre-filtration of medium to remove any impurities or toxic substances present in the starting solution. This step ensures that only sterile and viable cells are exposed to the intended growth conditions, reducing the risk of contamination and promoting efficient cell growth and proliferation.

In the pharmaceutical industry, polypropylene membranes are commonly used for pre-filtration of APIS (Active Pharmaceutical Ingredients). APIS often contain large particles or aggregates that can clog downstream processing equipment or affect the stability and purity of the final product. By applying a vacuum or low-pressure stream through the polypropylene membrane, these large particles can be efficiently removed, ensuring a consistent and high-quality APIS product. In drug delivery systems or controlled-release formulations, polypropylene membranes can be used for pre-filtration of dosing solutions to prevent clogging or blockages in pumps or valves. By applying a low-pressure stream through the membrane, fine particulates or debris can be filtered out, ensuring smooth and uninterrupted dosing operations. Pre-filtration of blood products: Blood products such as plasma, serum, and platelet concentrate require careful handling to maintain their quality and safety. Polypropylene membranes can be used for pre-filtration of these products to remove residual blood cells, debris, or other unwanted substances. This step helps to improve the yield and purity of the final product, making it suitable for clinical use or research applications.

Our company takes pride in offering tailored solutions to cater to the specific needs of to each customer, including customizing the pore sizes, formats and further processing the PP membranes into hydrophilic type if need be. Whether you require pre-filtration for medical or laboratory purposes, our polypropylene filter membranes could provide effective and reliable performance with minimal drawbacks.

Specifications Available

Features

• High porosity
• High temperature resistance
• High retention efficiency
• High flow rate
• Excellent dirt-holding capacity
• Low extractables
• No fiber shedding
• Excellent chemical stability and compatibility with a pH tolerance range from 1 to 14

Applications

As a type of tough, durable and non-toxic filter medium with graded pore structure, polypropylene membranes are highly recommended for applications that require general clarification, prefiltration and deep filtration.

• Air venting and gas filtration
• Aqueous and organic solvent filtration
• HPLC Solvent and Sample Filtration
• Lon chromatography
• Built-in prefiltration membrane in IV lines for gas venting or IV drug filtration
• Incorporated filter membrane of syringe filters for laboratory applications.