Syringe filters have become a fast, convenient, and reliable filtration tool for laboratories. It has a beautiful appearance, is lightweight, and has high cleanliness. It is mainly used for sample pre-filtration, clarification and particle removal, and sterilization filtration of liquids and gases.
How to use syringe filters:
- Before aspirating the sample, draw approximately 1ml of air into the syringe to minimize liquid residue
- Aspirate the sample into the syringe, invert the syringe and remove any residue from the needle
- Attach the syringe filter to the syringe and tighten lightly to ensure a good seal
- Filter the sample from the syringe and inject it into the vial, then follow the steps to maximize recovery
- Remove the filter, draw air into the syringe, reconnect the filter, and push out any residual sample
Precautions of Syringe Filters：
- Be careful using syringes with a capacity of less than 10 mL, as such syringes can be pressurized enough to burst the needle filter.
- The syringe filter uses the filters recommended in the operating procedures.
- Syringe filter is naturally hydrophobic, excellent, excellent thermal and chemical resistance, high strength and porosity, high flow rate, low extractable, low protein adsorption, particle retention: >99.99%, suitable for conventional Filtration (water and organics), gas filtration, corrosive liquid filtration, polar solvent filtration, sterile filtration in biological fields, sample preparation in HPLC
- Be careful using syringes with volumes of less than 10 mL. Because it easily creates enough pressure to burst the syringe filter. Hawach syringe filters are for laboratory use only and are disposable consumables, not recommended for reuse.
- Different types of disposable syringe filters have built-in corresponding types of microporous membranes. If users need to further check which type of samples the microporous membranes of this material are more suitable for, please refer to conventional filtration microporous membranes.
Some tips about syringe filters:
Features of Hawach syringe filters:
- All types, like PVDF syringe filter 0.45 microns add a layer of pre-filtration membrane before the ordinary filter membrane to protect the microporous membrane.
- The filter membrane is chemically inert and resistant to most solvents.
- The rigidity of the membrane and the structure of the large specific surface area has the characteristics of small retention capacity and low resistance, so the syringe filter can maintain high flux even if it handles difficult-to-filter samples.
- It is a method for filtering small samples by HPLC and GC. The shell of the needle filter is made of polycarbonate plastic, and the upper and lower parts are welded together by ultrasonic waves. It is resistant to high pressure and has no product leakage problem.
- Syringe filters contain a hydrophobic membrane that is an effective filter for solvents, chemicals, and other non-aqueous solutions. The PTFE membrane and robust polypropylene housing are ideal for the filtration of aggressive chemicals.