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  • Syringe Filters

    Johnson Test Papers' Syringe Filters are disposable and ready to use filtration units that are competitive quality filters and well packaged. We offer an extensive range of disposable syringe filters, categorised in different families. Rapid purification and removal of particles is very simple: just place the filter on the syringe, and you are ready for general use filtration. Special manipulations are not required. They are designed to provide fast and efficient filtration of aqueous and organic solutions. The fluid to be purified may be cleaned by drawing it up the syringe through the filter, or by forcing the unfiltered fluid out, through the filter.

    Syringe filters are used for numerous pharmaceutical, environmental, biotechnology, food/beverage, and agricultural industries. They can be used for the filtration of suspended matter from liquid samples or gases. Our syringe filters accommodate a variety of sample matrices for demanding sample preparation and microfiltration applications, such as: sample clarification, filtration of solvents used for chromatography applications, sterile filtration, sterile venting and medical applications such as filtration of biological samples, tissue cultures, proteins and nucleic acids.

    Syringe filters may also be used to remove particles from a sample, prior to analysis by HPLC. They are also available for the filtration of gases and for the removal of bacteria from a sample. The syringe filters are available in many different diameters, pore sizes, sterility and with several hydrophilic or hydrophobic membrane materials incorporated in a polypropylene housing and sealed without glue to maintain the purity of the filtered sample. Because every filter is used once, contamination of sensitive instrumentation by solid impurities is avoided, thus increasing the lifetime of chromatographic columns and equipment. Explore the characteristics of each family and choose the one most suitable for your application. ISO 9001 certified manufacturing is carried out to the highest standard in certified clean room conditions, using the latest manufacturing technology to ensure a high quality consistent product. All the syringe filters are certified by the HPLC Extractable Test.

    Key Features
    • Application Compatibility: Broad range of filtration media meets diverse application needs
    • Minimum sample hold-up: Syringe filter housing is specially designed to maximise sample recovery
    • Convenient: Each unit is clearly marked with an identifying code to denote pore size and membrane material
    • High quality housing construction and welding to prevent any leaking
    • Sterile: Filters can be purchased pre-sterilised by gamma radiation and individually wrapped
    • High lot-to-lot reliability and reproducibility for consistent filtration quality
    • Ultra-pure production facility according to the highest quality standards
    • Transparent syringe filter housing for full visual control
    Applications
    • HPLC sample preparation
    • Routine QC analysis
    • Content uniformity
    • Removal of protein precipitates
    • Dissolution testing
    • Food analysis
    • Biofuel analysis
    • Environmental samples
    Syringe Filter Product Range
    Syringe Filter Features
    MCE (Mixed Cellulose Ester)
    • Hydrophilic
    • Mixture of Cellulose Aceate and Nitro Cellulose
    • Filtration of HPLC samples
    • For filteration of general aqueous type liquids
    • Used for sterile filteration of small volumes and fine particles
    • Excellent strength and adsorption
    • Stable for pH 1-14
    • Sterile and non-sterile
    PES (Polyethersulfone)
    • Hydrophilic
    • Rapid filtration of aqueous solutions such as culture medium of tissues, additives and buffers
    • Excellent thermal resistance and chemical resistance
    • Mild organic solvents
    • Filtration of general aqueous type liquid
    • Used for purification of solutions containng protein
    • Stable for pH 1-14
    • Sterile and non-sterile
    CA (Cellulose Acetate)
    • Hydrophilic
    • For filtration of biological macromolecules
    • Low binding capacity for proteins
    • Stable for pH 1-14
    • Sterile and non-sterile
    Nylon (Polyamide)
    • Hydrophilic
    • Excellent mechanical strength and high adsorption
    • Used for most organic solvents
    • Available for mid-polar liquids
    • Stable for pH 6-13
    PVDF (Polyvinylidene Fluoride)
    • Hydrophilic
    • Extremely Low protein binding
    • Available for both organic solvents and aqueous solvents
    • Removal of fine particle
    • Filtration of biological solutions
    PVDF-D (Polyvinylidene Fluoride)
    • Hydrophobic
    • Excellent thermal resistance and chemical resistance
    • Filtration of gas
    • Filtration of corrosive solutions
    • Stable for pH 1-13
    PTFE-H (Polytetrafluoroethylene)
    • Hydrophilic
    • Polypropylene supported membrane
    • Excellent resistance to organic, acid and alkali solvents
    • Suitable for pre-filtration of mixed solvents used in HPLC
    • Suitable for mixed solvents of aqueous type and organic solvents
    PTFE-D (Polytetrafluoroethylene)
    • Hydrophobic
    • Polypropylene Supported Membrane Filter
    • Air and gas filtration
    • Available for air vent
    • Suitable for HPLC and organic solvent
    • Excellent chemical resistance, unaffected by ultraviolet rays