Tisch
PTFE Syringe Filters, 0.45um, 4mm, Luer-Lok/Luer Slip, Sterile, 100/Pk SKU: SF18244

Polytetrafluoroethylene (PTFE) Syringe Filters - SF18244

When you're working with microliter volumes of precious samples in aggressive solvents, every drop counts. These 0.45µm PTFE filters combine just 1µL holdup volume with broad chemical resistance for acids, bases, and challenging organics. The 4mm diameter removes particles from your samples while pre-sterilized packaging ensures contamination-free handling. Polypropylene housing withstands pressures up to 87psi across diverse solvent systems.

Key Polytetrafluoroethylene (PTFE) Membrane Characteristics

• Hydrophobic membrane design effectively clarifies organic solvents, acids, and bases without chemical interaction
• 0.45µm pore size removes particles and suspended solids from microscale sample volumes
• Pre-sterilized by gamma irradiation ensures contamination-free handling for critical laboratory applications
• Broad chemical resistance from strong carbon-fluorine bonds maintains stability in aggressive solvent systems
• Membrane thickness of 80-140µm optimizes retention efficiency while maintaining flow for ultra-small volumes

Key Construction Characteristics

• Polypropylene housing ensures broad chemical compatibility with organic and inorganic solvents
• Microscale 4mm diameter with 0.125cm² filtration area, ideal for ultra-low volume sterile applications
• 1µL holdup volume maximizes recovery of expensive or irreplaceable microscale samples/li>
• Luer-Lok/Luer Slip dual connection compatibility works with precision syringes and microvolume systems

SF18244 filters excel in your most precious sterile sample applications with an industry-leading 1µl holdup volume that virtually eliminates sample loss. Flow rate of 1.5ml accommodates careful, controlled filtration while the pre-sterilized packaging ensures complete aseptic processing. Bubble point verification at 7.25psi confirms consistent membrane pore structure for reproducible sterile clarification results.

For more information about chemical and material compatibility, please review our Chemical Compatibility Chart.

Bubble Point (psi)

7.25(absolute ethyl alcohol ）

Burst Pressure (psi)

87psi.

Connection Type

Luer-Lok/ Luer Slip

Construction

PP

Diameter

4mm

Filtration Area

0.125cm²

Flow Rate

1.5ml

Holdup Volume

1μL

Incompatibility

Aqueous samples without rewetting

Material

Polytetrafluoroethylene (PTFE)

Maximum Operating Pressure

87psi

Maximum Operating Temperature (°C)

60°C

Membrane Thickness (µm)

80-140μm

Pack Count

100

Pore Size (µm)

0.45

Sterility

Sterile

Sterilization

Autoclave: 121°C for 30 minutes/ Gamma: 5kg, for 8 hours

Volume Throughput (ml)

1ml

Weight

0.33

Wetability

Hydrophobic

• Microscale Sample Clarification - Removes particles from microliter volumes of precious reagents and analytical standards with minimal sample loss
• NMR Sample Preparation - Clarifies deuterated solvents and expensive isotope-labeled compounds for nuclear magnetic resonance spectroscopy analysis
• High-Value API Processing - Filters costly pharmaceutical active ingredients where 1µL holdup volume maximizes recovery of expensive compounds
• Mass Spectrometry Preparation - Removes particulates from LC-MS injection samples, protecting instrumentation while conserving limited sample volumes
• Protein Crystallography - Clarifies crystallization buffers and concentrated protein solutions for structural biology X-ray diffraction studies
• Cell Culture Reagents - Processes limited-volume growth factors and expensive culture supplements where sample conservation is critical