Characteristics of Several Commonly Used Membrane Filters

1. Nylon
Features: good temperature resistance, can withstand 121°C saturation steam hot pressure disinfection for 30min, the highest operating temperature of 60°C, good chemical stability, can withstand dilute acid, dilute base, alcohol, ester, oil, hydrocarbons, halogenated hydrocarbons, and organic oxides and other organic and inorganic compounds.
USES: electronic, microelectronic, semiconductor industry water filtration, tissue medium filtration. Liquid medicine filtration, beverage filtration high purity chemicals filtration.Filtration of aqueous solution and organic mobile phase.

2. Polyvinylidene fluoride (PVDF) membrane
Features: high mechanical strength, high tensile strength, good heat resistance and chemical stability, low protein adsorption rate; It has strong negative electrostatic property and hydrophobicity. It has two forms: hydrophobic and hydrophilic. However, it could not tolerate c rice, DMSO, THF, DMF, dichloromethane, chloroform, etc.
Purpose: hydrophobic polyvinylidene chloride film is mainly used in gas and steam filtration, high-temperature liquid filtration;
Hydrophilic polyvinylidene chloride (PVDC) membrane is mainly used in tissue medium, additives and other sterilizing filtration solvent and chemical raw material filtration, reagent aseptic treatment, high-temperature liquid filtration.

3. Mixed cellulose ester (MCE)
Features: uniform pore size, high porosity, no medium shedding, thin texture, small resistance, fast filtration rate, minimal adsorption, low cost, but not resistant to organic solutions and strong acid, strong alkali solutions.
USES: the medical industry needs the hot pressing sterilization water injection, the large infusion filtration particle. The degerming of heat-sensitive drugs (such as insulin ATP, coenzyme a and other biochemical preparations), the analysis and determination of particles and insoluble oil in solution with 0.45-micron filter membrane, and the determination of water pollution index were applied to the research departments of somatic cell hybridization and the prediction of heterosis by complementary line particles.

0.22 China PP Membrane Filters 0.45 Glass Fiber Membrane Filter

4. Polypropylene (PPM)
Features: no adhesive, stable chemical properties, flexible, not easy to break, high-temperature resistance, can withstand autoclave.Non-toxic and tasteless, acid and alkali resistant.
Purpose: suitable for making all kinds of coarse and fine filters and folding filter elements.
Applicable to the beverage, medicine and other industries of the plate and frame press filter membrane.
Suitable for supporting and pretreatment of reverse osmosis membrane and ultrafiltration membrane.
Polypropylene film is non-toxic, can be widely used in medicine, chemical industry, food, beverage, and other fields; Hydrophobic, especially for gas filtration.

5. Polyethersulfone (PES)
Characteristics: the ether sulfone microporous filter membrane belongs to the hydrophilic filter membrane, which has the characteristics of high flow rate, low dissolution, good strength, no adsorption of protein and extract, no pollution to the sample.
Purpose: Protein has low adsorption rate and high drug compatibility, and is used in biochemical, testing, pharmaceutical and sterilizing devices.

6. Polytetrafluoroethylene (PTFE)
Features: the most extensive chemical compatibility, can withstand DMSO, THF, DMF, dichloromethane, chloroform, and other strong solvents.
Application: filtration of all organic solutions, especially of strong solvents that other membranes cannot tolerate.
Polypropylene film is non-toxic, can be widely used in medicine, chemical industry, food, beverage, and other fields; Hydrophobic, especially for gas filtration.