What Do You Know About The Performance And Selection Of Syringe Filters

Syringe filters are widely used in laboratories. It does not require membrane replacement and filter cleaning, eliminating complicated and time-consuming preparations. It is mainly used for sample prefiltration, clarification and removal of particles, and sterilization filtration of liquids and gases. The preferred method for HPLC and GC for small samples.

The housing of the needle filter is made of polycarbonate plastic, and the upper and lower parts are welded together by ultrasonic, which is resistant to high pressure and does not have the problem of product leakage. The PTFE Syringe filters contains a hydrophobic PTFE membrane and is an effective filter for solvents, chemicals and other non-aqueous solutions. The PTFE membrane and the sturdy polypropylene housing are particularly suitable for filtering corrosive chemicals.

Syringe filters performance

◎Using ETO sterilization makes the sterilization more thorough.

◎Beautiful and lightweight appearance

◎High cleanliness

◎Surface filter membrane and imported shell materials ensure the stability and safety of raw materials, have larger filter membrane area and smaller dead volume, effectively increase the flow rate and filtration capacity and improve the filtration efficiency.

◎The advanced and enhanced two-shot injection molding process can withstand higher operating pressures, increase the filtration speed, and make filtration easier and easier.

◎Various specifications and packaging

◎Excellent economy, can achieve large use effect at low cost

◎Easy to use, precise and reliable

◎It does not contain pyrogen and RNase, which is safer and more reliable for biological experiments.

◎Each filter is individually packaged for easy use.

Choice of Syringe filters

◎Hydrophilic samples: select hydrophilic membranes, which have affinity for water and are suitable for filtering water-based solutions. Available filter membranes are: mixed cellulose ester, polyethersulfone (PES) Nylon and so on.

◎Strong corrosive organic solvent: generally use hydrophobic membrane, such as PTFE, polypropylene (PP) and other materials.

◎Protein solution: Choose a membrane with low protein adsorption, such as PVDF membrane.

◎Ion chromatography: PES filter membrane is generally considered to be more suitable for filtering solutions with low inorganic ions.

◎When selecting a syringe filter, in addition to the above factors, the volume of the sample should also be considered. Usually when the sample volume is less than 2 mL, a 4 mm diameter micro filter is used; the sample volume is between 2-10 mL, 13 For a filter with a diameter of mm, when the sample volume is greater than 10 mL, a needle filter with a diameter of 25 mm is used.