Pura Disc 13mm PTFE Syringe Filters, 0.45um, 2000 Pk
Whatman SKU: 6766-1304

Whatman Puradisc PTFE Syringe Filters, 0.45 µm, 13 mm, 2000/Pk - 6766-1304

Whatman's filtration expertise, refined across a century-plus of disciplined manufacturing, has made its name synonymous with laboratory-grade quality worldwide. A syringe filter dispenses filtrate directly into an autosampler vial, without the intermediate collection vessel a bulk vacuum filtration setup typically needs. PTFE filters aggressive organic solvents without swelling or breakdown while removing particles with absolute precision at each stated micron rating and withstands aggressive organics that degrade other media. The polypropylene housing resists aqueous acids, bases, and alcohols in routine use while leaving no seam for sample to bypass the membrane and keeps the sample chemically unaltered across the pass. When method reproducibility rests on consistent sample prep, syringe filtration holds that standard injection after injection.

Membrane Characteristics

• Non-wetting pore surface blocks liquid water while passing water vapor freely
• Inert composition offers no nutrient source for microbial growth
• Gas-venting and liquid-blocking function survives repeated autoclave sterilization cycles
• Water contact angle near 120 degrees marks strong hydrophobicity
• High membrane porosity, 70 to 80 percent void volume, delivers high flow at low pressure

Housing Characteristics

• The seal formed against the membrane blocks bypass at rated operating pressure
• Minimal intrinsic autofluorescence from the polypropylene housing supports background-sensitive fluorescence-based assay work downstream.
• Low moisture absorption keeps the housing dimensionally stable through humid storage and shipping
• Minimal ionic background from the polypropylene housing supports ion chromatography and trace-metal ICP-MS sample preparation.

Handling the harsh solvents your methods demand means choosing a filter built to withstand what passes through it, run after run. Solvent-stream filtration handles the solvents and reagents your methods rely on so your filter holds its integrity through the run. Start a live chat with our customer support technicians for quick answers to your compatibility, sizing, and sterility questions.

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

2000

Pore Size (µm)

0.45

Prefilter (Yes/No)

No

Sterility

Nonsterile

Sterilization

Autoclavable 121°C

Volume Throughput (ml)

Up to 10ml

Wettability

Hydrophobic

• UV Spectroscopy - Clarifies solvent-based samples before UV/Vis analysis, removing scattering particulates for precise, reliable absorbance readings.
• Toxicology Screening - Clarifies protein-precipitated serum, plasma, and urine extracts ahead of LC-MS or GC-MS drug screening analysis.
• Non-Aqueous CE - Prepares non-aqueous electrophoresis samples with low background noise for clean, high-resolution separation and analysis.
• Extractables Testing - Clarifies packaging material organic solvent extracts ahead of LC-MS analysis, keeping background low for leachable detection.
• Water Monitoring - After alcohol pre-wet, PTFE's chemical inertness holds up through repeated environmental sample runs without degrading.
• Mobile Phase Prep - Extends column life by consistently removing particulates from organic HPLC mobile phases before every injection.