Tisch
PTFE Syringe Filters, 0.22um, 4mm, Luer-Lok/Luer Slip, Sterile, 100/Pk SKU: SF18243

Polytetrafluoroethylene (PTFE) Syringe Filters - SF18243

Featuring hydrophobic PTFE membrane technology with 0.22µm pore size in pre-sterilized packaging for sterile filtration of microscale samples in aggressive solvent systems. Ultra-compact 4mm diameter filters minimize sample loss with just 1µl holdup volume while ensuring complete bacterial removal. Polypropylene housing construction maintains chemical compatibility at pressures up to 87psi for reliable microscale sterilization.

Key Polytetrafluoroethylene (PTFE) Membrane Characteristics

• Hydrophobic membrane design provides sterile filtration of organic solvents, acids, and bases without degradation
• Sterile-grade 0.22µm pore size ensures complete removal of bacteria and microorganisms from precious samples
• Pre-sterilized by gamma irradiation eliminates preparation steps for critical aseptic applications
• Superior chemical resistance from strong carbon-fluorine bonds withstands aggressive solvents and reagents
• 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

SF18243 filters excel in your most precious sterile sample applications with an industry-leading 1µl holdup volume that virtually eliminates sample loss. Flow rate of 0.7ml accommodates careful, controlled sterile filtration while the pre-sterilized packaging ensures contamination-free processing. Bubble point verification at 17.4psi using absolute ethyl alcohol confirms membrane integrity for your critical sterile filtration requirements.

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

Bubble Point (psi)

17.4(absolute ethyl alcohol ）

Burst Pressure (psi)

87psi.

Connection Type

Luer-Lok/ Luer Slip

Construction

PP

Diameter

4mm

Filtration Area

0.125cm²

Flow Rate

0.7ml

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)

0.22

Sterility

Sterile

Sterilization

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

Volume Throughput (ml)

1ml

Wetability

Hydrophobic

• Microscale Sterile Filtration - Removes bacteria from microliters of precious cell culture reagents and growth factors
• NMR Sample Sterilization - Ensures sterility of deuterated solvents and expensive labeled compounds for spectroscopy
• High-Value API Processing - Sterilizes costly active pharmaceutical ingredients, minimizing material loss
• Mass Spectrometry Prep - Eliminates bacterial contamination from LC-MS samples, preventing column degradation
• Protein Crystal Solutions - Sterilizes crystallization buffers and protein solutions for structural biology
• Analytical Method Development - Prepares sterile limited-volume samples for bioassay validation studies