Tisch
PTFE Hydrophilic Syringe Filters, 0.45um, 4mm, Luer-Lok/Luer Slip, Sterile, 100 /Pk SKU: SF18246

Polytetrafluoroethylene (PTFE) Syringe Filters - SF18246

Featuring hydrophilic PTFE membrane technology with a 0.45µm pore size in pre-sterilized packaging for reliable clarification of ultra-small sample volumes. The ultra-compact 4mm diameter design ensures exceptional recovery with a minimal 1µL holdup volume. While the device is pre-sterilized to prevent background contamination, the 0.45µm pore size is optimized for particulate removal and sample cleanup. The 0.125cm² filtration area handles precious micro-samples efficiently while the integrated prefilter protects against premature fouling.

Key PTFE Membrane Characteristics

• Validated 0.45µm Clarification Performance - Removes interfering particles while maintaining dissolved component passage for accurate micro-volume measurements
• Hydrophilic Surface Engineering - Modified fluoropolymer eliminates pre-wetting requirements, enabling immediate processing of aqueous micro-samples
• Chemical Stability Platform - Resists degradation from analytical solvents while minimizing chemical interaction for operational safety
• Low Protein Binding Characteristics - Preserves concentration of proteins and biologics through minimal surface adsorption in micro-volume processing
• 21.75psi Bubble Point Validation - Ensures consistent pore structure integrity and clarification performance across manufacturing batches

Key Construction Characteristics

• 1µL Ultra-Minimal Holdup Volume - Optimizes yield through precision dead space engineering, maximizing recovery of ultra-precious micro-specimens
• Ready-to-Use Sterile Packaging - Individual sterile units eliminate contamination risks and pre-handling delays in sensitive workflows
• Ultra-Compact 4mm Platform - 0.125cm² effective area provides precise clarification control for micro-volume samples requiring clean handling
• Integrated Polypropylene Prefilter - Protects primary membrane from particulate damage while maintaining controlled 1.5 ml/min flow characteristics

Engineered for micro-volume clarification where sample loss is the primary constraint, this filter delivers maximum recovery through its 1µL holdup design. You achieve effective particulate removal while preserving valuable material—critical for irreplaceable clinical specimens or research compounds. The pre-sterilized packaging ensures clean handling, and the controlled 1.5 ml/min flow rate enables precise processing. Backed by an 87psi burst pressure rating, this system provides reliable clarification for viscous samples with minimal loss.

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

Bubble Point (psi)

21.75psi

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

Bases, esters, ethers, ketones

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

Prefilter (Yes/No)

Yes

Prefilter Material

PP

Sterility

Sterile

Volume Throughput (ml)

1ml

Weight

0.33

Wetability

Hydrophilic

• Analytical Micro-Standards Clarification - Processes ultra-low volume reference materials for instrumental analysis with contamination control
• Clinical Diagnostic Micro-Samples - Clarifies precious patient specimens for optical and spectroscopic analysis, requiring clean handling protocols
• Pharmaceutical Micro-Formulation Testing - Filters drug candidates and formulation prototypes for analytical testing in controlled environments
• Research Enzyme Solution Processing - Clarifies ultra-low volume biochemical reagents and enzyme solutions for sensitive research applications
• Mass Spectrometry Sample Preparation - Prepares contamination-free micro-volume samples for LC-MS and analytical instrumentation procedures
• Quality Control Micro-Testing - Clarifies small-volume test solutions for pharmaceutical analysis requiring both cleanliness and precision