The syringe filters are an inevitable component of modern scientific laboratories. They are utilized for multiple filtration processes across the industries. There are various types of syringe filter membranes available according to their usability and functions. These include Nylon filters, Nitrocellulose, Cellulose Acetate, and PTFE Membrane filter. While selecting PTFE filters, you must understand the basics of its performance characteristics.

PTFE filters are known for their excellent compatibility with various chemical solvents and acids. They are available in Hydrophobic and Hydrophilic structure. While using Hydrophobic PTFE syringe filters for aqueous media, it is essential to pre-wet the media with methanol or ethanol.

The Characteristics and Benefits of PTFE Filters:

The membrane filters are used for gas and liquid filtration, venting purposes, and cleaning acids. It can be easily used for filtration of aggressive chemicals as well. Apart from these, PTFE membranes are tested for tensile and burst strength. Hence, they are strong and resistant to many violent substances. They have superior flow rate due to its high porosity and ultra thin membranes. They can be exposed to high temperatures according to the membrane polymer used in them. They are also used for filtration of air vents.

How To Select The Best PFTE Filters?

You must select these filters after considering certain essential factors that include:

Determine the Type of Solvent:

Whenever you choose the filters, always pick them according to the solvent that you intend to filter through them. The membrane should be selected according to ensure higher accuracy of the process.

Check the Volume of Sample:

You should also consider the volume of solvent to be filtered throughout the process while selecting the membrane. It should be chosen in the right size to ensure higher flow rate. The pore size should be appropriate to deliver the results anticipated by you.

Choose The Right Porosity:

The porosity of PTFE membrane should be chosen according to the size of particulates that may be dissolved in the sample to be used in the process. It is apt for the samples having lesser particulates because these substances exert extra pressure on the filter leading to failure of the method.

Check the Level of Resistance:

When selecting the membrane filters, always check their resistance against various chemicals and temperature variants. It should be resistant to high chemicals as well. Also, resistivity against all the known solvents is an important feature to be considered while selecting these filters.

Before buying PTFE membrane filter, always read and check its specifications properly to ensure higher accuracy rates.