How to Choose Right Syringe Filter

Choose the right syringe filter is an essential step for filtration. 

Various types of membrane materials used for manufacturing syringe filters.

Let’s discuss the Process  of selecting right syringe filters.

The Process for selecting a filter is..

1. Determine the particle size be retained or filtered.  The Membranes will keep every particle as similar and more significant  as compared to their defined pore

size.

2. Assess the chemical compatibility of the membrane filter with the liquid or gas to be filtered. Consider the chemical resistance properties of all the parts that will contact the filtrate.

3. Depending on the procedure performed, the membrane color or surface pattern may be  significant.

4. It includes hydrophilic or hydrophobic membranes with flow rate,temperature,Throughput, and sterilization requirements.

Types of Membrane Filter Material

1.Cellulose Nitrate (CN):

 Cellulose Nitrate membrane is a popular membrane

Which  can  be used in an analytical filtration and laboratory filtration. CN membrane

shows  good wetting properties and gives the fast rates of flow with aqueous

Solutions.

2.Mixed Cellulose Ester membrane:

 Mixed Cellulose Ester membrane provides a

more uniform and smoother surface compared to a pure nitrocellulose membrane.

This type of layer is helpful to count or analyze particles contained in liquids or

captured from aerosols.

3.Cellulose Acetate membrane:

Cellulose Acetate membrane is a combination

of cellulose triacetate and diacetate that creates a stable layer in both lateral and

longitudinal directions. Besides, the membrane has a low static charge, a very low

aqueous extractability, and excellent solvent resistance to minor weight molecular

alcohols.

4. Polyethersulfone (PES):

 It is a membrane of hydrophilic having low protein

binding.  There is no need for external wetting agents are required, resulting in low

extractables.PES membrane generally offers a fast flow rate and better chemical

resistance than cellulose acetate membranes.

5. Nylon membrane:

 It is durable, hydrophilic and highly adjustable with  high

range of the aqueous solutions like alcohols and solvents used in HPLC work.

6. Glass Microfibre:

 Glass Microfiber filters can be used as a pre-filter for samples

with high particulate content. GMF membranes come with a higher pore size than

other layers and are tolerant to most solvents.

7. PTFE membrane:

 It is robust, highly porous, and inert to most chemically

aggressive solvents, strong acids, and bases. The backing material imposes

chemical and thermal limitations.

6.

other layers and are tolerant to most s

olvents.

7.

membrane:

It is robust, highly porous, and inert to most chemically

chemical and thermal limitations.

Apart from these filters, other

membrane filters

material is also available in the