Polyethersulfone (PES) Membrane Properties

Polyethersulfone (PES) membrane is undoubtedly a popular choice for several general filtration procedures. For one, it is the most suitable choice for removing fine particles from solutions. These particles include fungi, bacteria, etc.

For this reason, the PES membrane is a versatile pick for processes like sterile filtration, preparation of certain samples, and I.V therapy.

Naturally, PES is hydrophilic. For this reason, it attracts water and gets wet easily. Thus, it tends to filter things faster than other materials available. On top of this, it further guarantees an elevated flow rate and superior throughputs.

The membranes are also inherently low-protein binding. For this reason, it minimizes the tendency of target analyte binding for certain procedures. Whether you’re striking with an autoclave or gamma radiation, the material is also sure to retain its functionality and dimensional stability effortlessly.

Now, we've seen a high-level overview of the properties that set PES membranes apart. Now, the next step is properly defining them. To do this, we will take a look at some of those areas where these properties are best felt.

With no further ado, let's delve right into it.

Properties for medical processes

This is where the hydrophilic nature of polyethersulfone gets to flex its muscles. One such is infusion therapy. With the polyethersulfone membrane, you can be sure of a relatively quicker finished device priming. Since it gets wet relatively quicker, it also guarantees higher throughput for a longer period. The membrane also features a uniform pore structure. This property is best felt when it comes to sterile fluid and particulate retention.

Properties that are relevant in the preparation of samples

The PES membrane is characterized by minimal protein binding characteristics. This feature is what makes it great for preparing a vast range of biological samples. You can also get PES membranes in several pore sizes, making it a versatile choice. The membrane slots in effortlessly for removing coarse particulate in applications related to pre-filtration. It also does well to help you remove fine particulate for final sample clarification.

That’s not all. PES doubles as the leading pick for multiplexed and bead-based assays. It further helps bring the tendency of false positives to the barest minimum in serological assays.

Properties applicable to microbial analysis

You can find the polyethersulfone membrane in the modified black form. In this format, the membrane offers you just the right contrast you need for particulate and microbiological analyses. With the dark background, you can get good contrasts. This makes it easier to estimate opaque colonies in your laboratory. It also makes it easier to monitor lightly stained particulates in the fluids being observed. If you’re looking to isolate and count your yeast and mold colonies, the PES membrane can help you do that effortlessly.

Properties that make it suitable for sterile filtration

PES membrane is available in several pore sizes. You can get sizes from 0.1 to 0.2 micrometers. This is suitable for buffer and culture sterilization as well as pharmaceutical filtration procedures. If you are worried about contamination from mycoplasma, the 0.1-micrometer pore size can rid you of this concern.

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