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  • PTFE-D (Polytetrafluoroethylene)

    Johnson Test Papers’ PTFE Syringe Filters are purpose built with features designed to bring the highest levels of performance and purity to your research. We incorporate a variety of membranes to offer separation and purification solutions for the majority of the laboratory needs. This hydrophobic filter is used for quick, simple and reliable ultra-cleaning of small volumes and very suitable for air and gas particulate filtration.. PTFE is chemically stable and inert. It has excellent compatibility with aggressive solvents and acids. It exhibits low protein binding and is recommended for the filtration of non-aqueous samples e.g. HPLC solvent preparation and degassing to ensure column protection. Prior to filtering of aqueous samples, the membrane must be pre-wetted with a water-miscible organic solvent such as ethanol . They can also be autoclaved

    Key Features
    • Broad chemical compatibility
    • For non polar liquids and gases
    • Strong chemical and thermal stability
    • Resistant against most organic solvents and aggressive acids and bases
    • Strong hydrophobicity
    • Designed with a female Luer lock and male Luer slip outlets
    • Also available as individually wrapped sterile filters, certified RNase-free, DNase-free and DNA-free - non phytogenic
    Applications
    • Organic solvents and corrosive chemical filtration
    • Strong acidic solvent filtration
    • Alkali solvent filtration
    • Preparation of HPLC or GC samples
    • Filtration of air and gases
    Specification 13mm
    Material Membrane: PTFE
    Housing Material: PP
    Filter diameter(mm): 13mm
    Filtration area (cm): 1.09
    Holdup volume (μL) <20
    Sample volume (mL): <10
    Maximum Operating Temperature: 130°C
    Maximum Operating Pressure (psi): 87°C
    Applicable pH value: 1-14
    Specification 25mm
    Material Membrane: PTFE
    Housing Material: PP
    Filter diameter(mm): 25mm
    Filtration area (cm): 4.08
    Holdup volume (μL) <100
    Sample volume (mL): <100
    Maximum Operating Temperature: 130°C
    Maximum Operating Pressure (psi): 87°C
    Applicable pH value: 1-14
    Sizes & Product codes
    Dimension Sterilisation Pack Size Pore Size Product Code
    13mm Without 100 0.20μM SFD13P020N
    0.45μM SFD13P045N
    25mm Without 50 / 100 0.20μM SFD25P020N
    0.45μM SFD13P045N
    Combi Syringe Filters
    Diameter Sterilisation Pack Size Pore Size Product Code
    13mm Without 50 0.2μM SFD25P020G
    Without 50 0.45μM SFD25P045G
    25mm Without 100 0.2μM SFD25P020G
    Without 100 0.45μM SFD25P045G