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

Polytetrafluoroethylene (PTFE) Syringe Filters - SF18244

Featuring hydrophobic PTFE membrane technology with 0.45µm pore size in pre-sterilized packaging for precise clarification of microscale samples in aggressive solvent systems. Ultra-compact 4mm diameter filters minimize sample loss with just 1µl holdup volume while ensuring effective particle removal. Polypropylene housing construction maintains chemical compatibility at pressures up to 87psi for reliable sterile microscale clarification.

Key Polytetrafluoroethylene (PTFE) Membrane Characteristics

• Hydrophobic membrane design effectively clarifies organic solvents, acids, and bases without chemical interaction
• Precision 0.45µm pore size removes particles, suspended solids, and microbial cells from precious samples
• Pre-sterilized by gamma irradiation ensures contamination-free filtration for critical aseptic applications
• Exceptional chemical resistance from strong carbon-fluorine bonds maintains stability in caustic environments
• 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
• Industry-leading 1µl holdup volume maximizes recovery of expensive or irreplaceable samples
• 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

Wetability

Hydrophobic

• Sterile Microscale Clarification - Removes particles from microliters of precious sterile reagents and standards
• Sterile NMR Sample Prep - Clarifies deuterated solvents and expensive labeled compounds under aseptic conditions
• High-Value API Processing - Filters costly pharmaceutical ingredients, maintaining sterility with minimal material loss
• Sterile Mass Spectrometry Prep - Eliminates particulates from LC-MS samples, preventing contamination and degradation
• Protein Crystal Solutions - Clarifies sterile crystallization buffers and protein solutions for structural biology
• Cell Culture Reagent Filtration - Prepares sterile, limited-volume growth factors and expensive culture supplements