PTFE Syringe Filter w/ Glass Microfiber Prefilter, 0.45 m, 25mm, Nonsterile, 100/Pk
LabExact SKU: LE-IWT-ES10196

LabExact PTFE Syringe Filters, 0.45 µm, 25 mm, 100/Pk - LE-IWT-ES10196

Many syringe filters ship with lot-specific quality documentation, giving analysts documented traceability beyond what an ad hoc bulk filtration setup typically provides. Chemically inert PTFE resists attack from the harshest process chemistries while suiting solvent filtration where other membranes fail and reaches the same absolute retention on every run. Thermal-bonded PP construction leaves no seam for sample to bypass the membrane while keeping sample purity intact through the filtration pass and maintains a low-dead-volume internal flow path. For routine sample preparation across many methods, each analytical run starts with a consistent, particle-free sample without added hardware or a cleaning step.

Membrane Characteristics

• Absolute pore rating delivers reproducible retention across every protocol
• Membrane integrity holds across repeated autoclave sterilization cycles at 121°C to 134°C
• Fully fluorinated carbon backbone resists ultraviolet and ozone degradation
• Gas-venting and liquid-blocking function survives repeated autoclave sterilization cycles
• High porosity minimizes hold-up volume for small sample volumes

Housing Characteristics

• The seal formed against the membrane blocks bypass at rated operating pressure
• Plasticizer-free polyolefin construction keeps the fluid path clean
• Minimal extractable release from the housing supports sensitive analytical work downstream
• Standardized luer connection geometry provides secure engagement with standard syringe tips

An aggressive solvent can leach or break down a vulnerable filter and carry debris into your prep. Solvent-stream filtration handles the solvents and reagents your methods rely on so your filter holds its integrity through the run. Request blanket-order pricing and paperwork support for your routine filtration purchases.

Sterilization Guidance

Customer autoclave compatibility at 121°C accommodates in-lab sterilization timing.

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

Diameter

25mm

Environmental Express Equivalent

SF145T

Material

Polytetrafluoroethylene (PTFE)

Pack Count

100

Pore Size (µm)

0.45

Sterility

Nonsterile

Weight

0.168

Wettability

Hydrophobic

Whatman Equivalent

6874-2504

• Chemical Synthesis - Resists aggressive organic solvents and corrosive acids for compatibility with harsh synthetic reaction mixtures.
• Battery Electrolyte Prep - Clarifies lithium-ion battery electrolyte in carbonate solvents ahead of GC-MS purity and impurity analysis.
• Extractables Testing - Clarifies packaging material organic solvent extracts ahead of LC-MS analysis, keeping background low for leachable detection.
• Mobile Phase Prep - Extends column life by consistently removing particulates from organic HPLC mobile phases before every injection.
• Toxicology Screening - Clarifies protein-precipitated serum, plasma, and urine extracts ahead of LC-MS or GC-MS drug screening analysis.
• Spirits Congener Analysis - Clarifies distilled spirits samples ahead of GC analysis, protecting columns from residue during congener profiling.