Syringe Filters Suppliers

A syringe filter is a small, disposable device that is attached to the end of a syringe to remove impurities or particles from a liquid sample before it is injected or analyzed. It consists of a membrane filter housed in a plastic casing with a female luer lock inlet and a male luer slip outlet. Syringe filters are commonly used in laboratory settings for sample preparation, purification, and sterilization in applications such as HPLC, GC, and microbiology.

There are several types of syringe filters available in Australia, including:

• Nylon syringe filters: These are commonly used for filtering aqueous and organic solutions, as well as for sterilizing biological fluids.
• PTFE syringe filters: These are used for filtering aggressive solvents, acids, and bases, as well as for sterilizing gases and air.
• PVDF syringe filters: These are used for filtering aqueous and organic solutions, as well as for sterilizing biological fluids and gases.
• Cellulose acetate syringe filters: These are used for filtering aqueous solutions, as well as for sterilizing biological fluids.
• Glass fiber syringe filters: These are used for filtering viscous or particulate-laden solutions, as well as for pre-filtering samples before further analysis.
• Polypropylene syringe filters: These are used for filtering aqueous and organic solutions, as well as for sterilizing biological fluids.
• Regenerated cellulose syringe filters: These are used for filtering aqueous solutions, as well as for sterilizing biological fluids.
• Anion and cation exchange syringe filters: These are used for separating and purifying charged molecules in solutions.

Overall, the choice of syringe filter depends on the specific application and the properties of the sample being filtered.

The pore size of a syringe filter refers to the size of the openings in the filter membrane, which determines what size particles can pass through the filter. To choose the right syringe filter for your application, consider the size and type of particles you need to remove or retain, the sample volume, and the chemical compatibility of the filter material with your sample. Common pore sizes for syringe filters range from 0.2 to 5 microns, with smaller pore sizes used for removing smaller particles and larger pore sizes used for retaining larger particles.

The membrane material used in syringe filters can vary, with common options including nylon, PTFE, PVDF, and cellulose acetate. The choice of membrane material can affect the filtration process in several ways, including the size and type of particles that can be filtered, the chemical compatibility of the membrane with the sample and solvent, and the flow rate and pressure required for filtration. It is important to select a membrane material that is appropriate for the specific application and sample being filtered to ensure optimal results.

The maximum pressure that a syringe filter can withstand depends on the specific filter and manufacturer. It is important to check the product specifications before use to ensure that the filter can handle the desired pressure. Generally, most syringe filters can withstand pressures up to 6-7 bar (87-101 psi).

The recommended flow rate for a syringe filter depends on the size of the filter and the viscosity of the solution being filtered. Generally, a flow rate of 1-2 mL/min is recommended for a 25 mm syringe filter, while a flow rate of 5-10 mL/min is recommended for a 13 mm syringe filter. However, it is important to follow the manufacturer's instructions and test the filter with a small amount of solution before filtering larger volumes.

To properly use a syringe filter, first select the appropriate filter size and membrane material for your application. Then, attach the filter to a syringe and fill the syringe with the sample to be filtered. Slowly push the plunger to force the sample through the filter and into a clean container. To dispose of the used syringe filter, place it in a sharps container or other appropriate biohazard waste container. Do not attempt to reuse or recycle syringe filters.

Yes, you can sterilize a syringe filter before use by autoclaving or using chemical sterilization methods. It is important to follow proper sterilization procedures to ensure the filter is free of contaminants and safe for use.

The shelf life of a syringe filter depends on the type of filter and the manufacturer's recommendations. Generally, most syringe filters have a shelf life of 2-3 years if stored properly. They should be stored in a cool, dry place away from direct sunlight and moisture. It is also important to avoid exposing the filter to extreme temperatures or chemicals that could damage the membrane. Before use, always check the expiration date and inspect the filter for any damage or defects.