How to choose the correct syringe filter

There is no need to explore further if you need trustworthy filters to get rid of pollutants. Syringe filters use membranes to remove impurities, like bacteria, from fluid samples, providing a convenient solution. These filters are widely used in laboratories for efficient and rapid filtration, sterilization, and material purification. When it comes to choosing the right syringe filter, Simsii is your trusted partner. They can help you select the ideal syringe filter for your particular requirements.

Importance of Choosing the Right Syringe Filter

When selecting a syringe filter, consider factors such as the filter body material, appropriate pore size, filter diameter based on sample volume, membrane wettability, connection type, and membrane material. Choosing the right syringe filter is crucial for accurate results and efficient analytical processes.

Filter body

The selection of the filter body for a syringe filter depends on the sample being filtered. Disposable filters made of polypropylene are suitable for most applications. However, you can consider stainless steel and polycarbonate for reusable filters.

 

Filter diameter

The diameter of a syringe filter is chosen based on the volume of the sample. Filters need to be bigger so that they can handle sizeable volumes. Syringe filters with 4 mm diameter are ideal for small volumes (1 ml), while 30 mm diameter filters are suitable for larger volumes (100 ml). However, standard diameters range from 4 mm to 33 mm.

 

Wettability of the membrane

When selecting a membrane filter, consider whether it is naturally hydrophilic or hydrophobic. Hydrophilic filters, including those made of polyethersulfone (PES), Nylon, Cellulose Acetate (CA), Regenerated Cellulose (RC), Anopore, Glass Fibre, and polypropylene, repel other molecules while allowing water to pass through the membrane.

 

Appropriate pore size

The selection of a syringe filter pore size depends on the particle size in the solution. Available diameters range from 0.05 to 10 m, with 0.2 and 0.45 m being utilized often in lab settings. However, to pass the sample through the filter, smaller pores may need more pressure.

 

Connection type

Syringe filters usually feature a female luer lock inlet and a male luer slip outlet. However, some filters are designed with double luer lock connections for improved sealing, which include a female luer lock inlet and a male luer lock outlet.

 

Membrane material

When selecting a membrane material for syringe filters, consider the following types available in the market:

· Cellulose Nitrate (CN) membrane: It is a commonly used hydrophilic material in laboratory filtrations, known for its rapid flow rate compared to other membranes.

· Nylon membrane: This strong and hydrophilic material is typically used for purifying aqueous solutions, including bottoms, HPLC solvents, alcohols, and aromatic hydrocarbons.

· Cellulose Acetate (CA) membrane: It is a hydrophilic material commonly used for the filtration of biological and aqueous samples. It has a lower protein binding capacity and is known for its effectiveness as a membrane.

 

Conclusion

Choosing the correct syringe filter is essential for accurate results and efficient analytical processes. Consider factors like filter body, pore size, diameter, membrane wettability, connection type, and membrane material. Simsii can provide the expertise and assistance you need to select the perfect Sterile Syringe Filter for your specific requirements.