What Are Syringe Filters Used For?

In HPLC analysis, the particle size of chromatographic column packing is small and easily blocked by impurity particles, so samples and solvents need to be pre-filtered to remove particulate contaminants and protect the instrument. Ion chromatography, commonly used in environmental analysis, also requires that inorganic pollutants cannot be introduced in sample pretreatment. Syringe filters can always used in HPLC analysis and IC analysis. Filtration of sample solutions is an important step in the sample pretreatment process.

Selection of filter material

The selection of filter membranes is generally divided into: material selection, pore size selection, size selection, and if it is used to filter protein-containing solutions, the protein binding rate also needs to be considered. In general, one type of membrane may not be suitable for all applications, and the selection of suitable or not directly affects the results of filtration. What Are Syringe Filters Used For? Filtration of aqueous and organic phase solutions in education and commercial R&D laboratories; teaching, quality inspection, quality control; sample preparation for chromatography and mass spectrometry. Ambient air, waste gas, and water quality analysis. Testing and analysis of raw materials, finished products and semi-finished products of food, beverages and drugs. Drug testing, medical research, life science research. Microelectronic semiconductor, chemical industry, cement/mineral analysis, etc.

Nylon Syringe FiltersHydrophobic PTFE Syringe Filters SupplierHydrophobic PVDF Syringe Filters
Membrane Type Nature Application
Mixed Cellulose (MCM) - Hydrophilic membrane
- Low protein adsorption
- High-temperature steam sterilization
- Analysis of particulates and oil insoluble in aqueous solutions, sterile filtration
- Filtration of gases, oils, beverages, alcohol particles, and bacteria.
Nylon syringe filter -Broad chemical compatibility (avoid strong acids)
- Good flexibility
- Compatible with most reagents
- Low protein adsorption
-Electronic, microelectronics, semiconductor industrial water filtration -Filtration of liquid medicines, beverages, and high-purity chemicals
Polytetrafluoroethylene (hydrophobic) (PTFE) - Broad chemical compatibility
- Low protein adsorbent
- Can be sterilized by high-temperature steam multiple times
- Very low extraction background
- Solvent sterilization filtration: butyl acetate, ethyl acetate, various lipids, and solvents such as acetone, dimethyl sulfoxide, methanol, ethanol, is acetone, etc.
- Compressed air sterile filtration: air, nitrogen, feed to the bioreactor.
Polyvinylidene fluoride(PVDF) -Broad chemical compatibility (avoid strong bases)
- Very low extraction background
- Very low protein adsorption
- Sterile filtration of compressed air: removal of impurities from organic solvents and solvents and sterile filtration
- Clarification and filtration of pharmaceuticals, beverages, and alcohol.
Polyether base (PES) -Excellent hydrophilicity
-Broad chemical compatibility
-Suitable for high-throughput, high-efficiency filtration
-Low protein adsorption
- Filtration of pharmaceutical and biological products
- Ultrapure water filtration, chemical raw material filtration. Filtration of beer, beverages, mineral water, etc.
Enhanced Cellulose (Reg. Cellulose) -Lower protein binding capacity
-Broad chemical compatibility
- Filtration of water-soluble biological samples and organic solvents.