Tisch
PTFE Hydrophilic Syringe Filters, 0.22um, 30mm, Luer-Lok/Luer Slip, Nonsterile, 100/Pk SKU: SF18137

Hydrophilic Polytetrafluoroethylene (PTFE) Syringe Filters - SF18137

Meeting the stringent demands of cell culture and biological assay preparation, the SF18137 offers validated bacterial retention for confident downstream processing. Quality-controlled manufacturing ensures the filtration medium delivers the retention efficiency and throughput that demanding laboratory protocols require. End-to-end quality controls from membrane casting through final device assembly ensure that rated pore size, flow rate, and burst pressure are met on every production lot.

Key PTFE Membrane Characteristics

• Near-zero extractable levels ensure PTFE membranes contribute no measurable background to mass spectrometry or trace analytical workflows.
• Optimized internal flow geometry produces a minimal holdup volume of less than 100, maximizing sample recovery from precious or limited-volume preparations.
• Excellent for filtering aggressive acids, bases, and non-aqueous solvents.
• Unmatched solvent resistance allows PTFE to process chlorinated hydrocarbons, ketones, and strong oxidizers that destroy other membrane chemistries.
• Require pre-wetting with alcohol before filtering aqueous solutions.

Key Housing Characteristics

• Optimized internal flow geometry within the PP housing minimizes backpressure during manual syringe filtration of viscous or high-volume samples.
• Strict quality control on each polypropylene housing ensures the membrane seal withstands standard operating pressures without leakage or deformation.
• Polypropylene's inherent resistance to aqueous acids, bases, and alcohols ensures housing stability across the chemical range encountered in routine laboratory use.
• High-purity medical-grade polypropylene housing delivers broad chemical compatibility with minimal risk of extractable contamination in the filtrate.

When you run validated methods where every filtration step must perform identically, the manufacturing controls behind this device ensure that switching lots does not introduce the variability that triggers out-of-specification investigations. PTFE's thermal stability across a wide operating range means you can filter hot solvents and process elevated-temperature samples without the membrane softening or pore distortion that limits thermoplastic alternatives. Complete product specifications, certificates of analysis, and lot-specific documentation to support your quality system requirements are available through Tisch Scientific upon request.

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

Bubble Point (psi)

43.51psi

Connection Type

Luer-Lok/Luer Slip

Construction

Polypropylene (PP)

Diameter

30mm

Filtration Area

4.9cm²

Flow Rate

29.5ml/ min @ 10psi.

Holdup Volume

100μL

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)

0.22

Prefilter (Yes/No)

Yes

Prefilter Material

Polypropylene (PP)

Sterility

Nonsterile

Sterilization

Autoclave: 121°C for 30 minutes

Volume Throughput (ml)

110ml

Weight

0.91

Wetability

Hydrophilic

• Cell Culture Harvest - Clarifies fermentation broths and removes cellular debris from outputs while preserving downstream purification
• HPLC Sample Preparation - Removes particulates from complex biological matrices and pharmaceutical formulations, preventing column damage
• Aqueous Buffer Filtration - Clarifies laboratory buffers and mobile phases, removing particles that interfere with instrumentation and assays
• Pharmaceutical Quality Control - Processes drug formulations and active ingredients, removing visible particles before analysis and testing
• Biotechnology Sample Processing - Filters protein solutions and biological extracts, eliminating aggregates and precipitates
• Environmental Water Analysis - Clarifies aqueous samples for chemical testing, removing suspended solids before instrumental analysis