The most popular choice for filtering aqueous solutions used in the lab are hydrophilic syringe filters. And the key factors we consider are filter connection, filter material, pore size, the diameter of the filter, and sterility.
Syringe filters usually have two connection, female Luer lock inlets, and male Luer slip outlets. We can find syringe filters fitted with double Luer lock connection can also. This type of threaded connection provides a tight and secure seal.
In aqueous solutions, various materials can be used for a syringe filter’s membrane. The different applications and a particular range of solvents indicate membrane material types. And you may consider the chemical compatibility, binding properties, and wettability of the filter membrane if you want to choose right syringe filters.
Chemical compatibility determines if the filter’s material can hold up to the chemical nature of the aqueous solution or not; such as the liquid’s pH. Binding properties help to prevent components bind to the filter and compromise the filtered molecular composition of your sample. And wettability of the membrane shows if the membrane is hydrophilic or not. The filter’s membrane will stay free of contaminants when attracting water by the process of pushing away other molecules and allowing water access to the filter’s membrane if filters are hydrophilic.
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