Pura Disc 13mm PTFE Syringe Filters, 0.45um, 50 Pk
Whatman SKU: 6775-1304

Whatman Puradisc PTFE Syringe Filters, 0.45 µm, 13 mm, 50/Pk - 6775-1304

Whatman maintains in-house specialists who set and verify material specifications separately for its cellulose, glass-fiber, and polymer membrane chemistries, tailoring quality control to how each one behaves in use. Individually packaged and pre-tested, a syringe filter needs no functional check before use the way a shared reusable holder does. Chemically inert PTFE resists attack from the harshest process chemistries and clarifies solvent streams at the rated pore size. The PP housing sustains full structural integrity during elevated-temperature filtration operations and maintains a low-dead-volume internal flow path. When method reproducibility rests on consistent sample prep, syringe filtration holds that standard injection after injection.

Membrane Characteristics

• Node-fibril microstructure resists compaction under sustained operating pressure
• Absolute pore rating delivers reproducible retention across every protocol
• Minimal moisture absorption pairs with a low tare mass
• Non-fibrous, fully synthetic structure sheds no fibers into filtrate
• Surface energy near 18.5 dynes per centimeter repels oils and nonpolar liquids

Housing Characteristics

• Resists stress cracking from aqueous salt and buffer solutions
• PP housing rated to 121°C holds its geometry through high-temperature sample preparation and processing.
• Plasticizer-free polyolefin construction keeps the fluid path clean
• Polypropylene density near 0.90 g/cm3 keeps housing weight low relative to denser engineering plastics

Handling the harsh solvents your methods demand means choosing a filter built to withstand what passes through it, run after run. Reliable solvent prefiltration clears particulates from your organic samples from reaction mixtures and crude extracts through further processing. Contact Tisch Scientific for technical guidance on selecting the right filtration product for your specific application requirements.

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

Bubble Point (psi)

0.6 bar (9 psi) [IPA]

Burst Pressure (psi)

75psi

Connection Type

Luer-Lok/ Luer Slip

Construction

Polypropylene

Diameter

13mm

Filtration Area

1.3cm²

Holdup Volume

<25µl

Material

Polytetrafluoroethylene (PTFE)

Maximum Operating Pressure

75psi

Maximum Operating Temperature (°C)

121°C

Pack Count

50

Pore Size (µm)

0.45

Prefilter (Yes/No)

No

Sterility

Nonsterile

Sterilization

Autoclavable 121°C

Volume Throughput (ml)

Up to 10ml

Wettability

Hydrophobic

• Water Monitoring - After alcohol pre-wet, PTFE's chemical inertness holds up through repeated environmental sample runs without degrading.
• Fuel Analysis Prep - Clarifies gasoline and other petroleum samples ahead of gas chromatography, protecting injector ports from residue buildup.
• Dye and Pigment Analysis - Clarifies dye solutions in DMF, NMP, and other aggressive organics ahead of spectrophotometric color strength testing.
• Battery Electrolyte Prep - Clarifies lithium-ion battery electrolyte in carbonate solvents ahead of GC-MS purity and impurity analysis.
• Agrochemical Formulation QC - Clarifies technical pesticide concentrates in organic solvent ahead of HPLC potency and impurity analysis.
• Trace Metals Analysis - PTFE's low metal-extractable profile clarifies acid-digested samples for clean, low-background ICP-MS and ICP-OES results.