Syringe Filter 33mm (PES) polyethersulfone 0.45µm sterile Pack of 50

£167.22 excl. VAT
£200.66
incl. VAT

SKU - 1181487

SF33PE45S

SKU -

1181487

Order now for 30 day delivery

A range of economical, disposable and extremely easy to use PES syringe filters. Designed with female luer lock inlet and male luer slip outlets.
Sterile filters are RNase, DNase, DNA and pyrogen free and are individually wrapped. Packs of 1000 filters are packaged in clear bags.

Applications

Good for use in aqueous applications and biological samples
Low binding to proteins and nucleic acid
Tissue culture additive and media filtration
Low affinity for proteins and extractable with substantially faster flow rates than PVDF

Properties

Porosity 0.2µm		0.45µm
Membrane type	Hydrophilic	Hydrophilic
Water Flow	21 m³/m²/hr/bar	36 m³/m²/hr/bar
Bubble point*	430kPa	300kPa
Applicable pH range	pH 4-8	pH 4-8
Maximum operating temperatue	Up to 90ºC	Up to 90ºC
Chemical resistance	Most hydrophilic fluids	Most hydrophilic fluids

*Bubble point: pressure required for a liquid to flow through a dry filter membrane. For liquid to flow through the membrane the bubble point pressure must be overcome. If bubble point pressure cannot be attained with a certain combination of liquid, filter membrane and vacuum increasing the pore size is a solution.

Guide to…Syringe Filter Properties

Identifying the filter material most suitable for your application based upon the nature of the liquid or gas you are filtering will ensure the best performance of your filter. Each syringe filter contains a membrane filter of a set diameter and plastic housing with luer connections used for connecting to syringes (or in-line hosing systems).

The membrane filter material has differing chemical and physical properties such as hydrophobicity, flow rate, extractables and protein retention making them suited to differing applications. Once you have selected the most compatible filter material, you will need to consider what pore size is most appropriate for your application and what diameter filter is suitable for your sample volume.

Membrane Material

Membrane Material	Protein binding	Hydrophilic/Hydrophobic	Chemical resistance	Applications
Hydrophilic PTFE	Low	Hydrophilic	High	Purification of HPLC organic and solvent/aqueous solutions
Hydrophobic PTFE	Low	Hydrophobic	High	Filtration of solvents
PES	Low	Hydrophilic	Low/Medium	Purification of tissue culture solutions, buffers
PVDF	Low	Hydrophilic	Medium	Filtration of protein solutions
NYL	Medium	Hydrophilic	Medium	Filtration of aqueous and solvent/aqueous mixtures
CA	Low	Hydrophilic	Low	Filtration of protein solutions
CN	High	Hydrophilic	Low	Filtration of aqueous solutions where protein binding is not a concern and microbioloigical applications.
RC	Low	Hydrophilic	Medium	Filtration of aqueous and organic solvents and protein recovery applications.

Filter diameter

High particulate loaded samples with tend to block the pores in the membrane more quickly so the total volume you can filter through a certain diameter syringe filter will vary greatly. Please take the below figures as a guide only.

13mm diameter - for samples <10ml
25mm diameter - for samples <100ml
33mm diameter - for samples <250ml

For samples that are very particle ladden, it is recommened that you try pre-filtering your sample. Pre-filtering can be achieved with a number of different filters, such as glass microfibre. Some syringe filters come with an in-built pre-filter.