Pura Disc 13mm PVDF Syringe Filters, 0.45um, 100/Pk
Whatman SKU: 6779-1304

Whatman Puradisc PVDF Syringe Filters, 0.45 µm, 13 mm, 100/Pk - 6779-1304

Whatman's brand recognition and documented performance history support specification in standardized analytical methods. A syringe filter holds its membrane in a leak-tight housing for clarification at the bench. The hydrophilic PVDF membrane keeps analyte adsorption low for clean recovery while suiting HPLC sample preparation and aqueous clarification and holds consistent absolute retention at the rated pore size. The PP housing prevents sample bypass under rated operating pressure while staying inert across common laboratory solvents and contributes minimal extractables to the filtrate. For routine sample preparation across many methods, the syringe filter folds clarification into one disposable step.

Technical Specifications

• Mechanically durable membrane holds integrity under filtration pressure
• Absolute pore size rating gives consistent results across protocols
• Hydrophilic surface wets aqueous and HPLC samples without pre-wetting
• Low extractables preserve a clean chromatographic baseline
• Resists HPLC mobile phases, alcohols, and mild hydrocarbons

Housing Specifications

• Optimized internal geometry minimizes backpressure in service
• Low extractable contribution protects sensitive downstream analyses
• Reliable housing-to-membrane seal prevents bypass at rated pressure
• Thermal-bonded construction keeps adhesives out of the fluid path

Sample clarification before injection is the cheapest insurance your chromatography system has. Upstream sample clarification keeps your separations clean and reproducible so your filtrate reaches the column clean. Review our Chemical Compatibility Chart, or ask technical service to confirm chemical compatibility for your specific application.

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

Bubble Point (psi)

1.2 bar (17 psi)

Burst Pressure (psi)

75psi

Connection Type

Luer-Lok/ Luer Slip

Construction

Polypropylene

Diameter

13mm

Filtration Area

1.3cm²

Holdup Volume

<25µl

Material

Polyvinylidene Difluoride (PVDF)

Maximum Operating Pressure

75psi

Maximum Operating Temperature (°C)

121°C

Pack Count

100

Pore Size (µm)

0.45

Prefilter (Yes/No)

No

Sterility

Nonsterile

Sterilization

Autoclavable 121°C

Volume Throughput (ml)

Up to 10ml

Wettability

Hydrophobic

• HPLC Sample Prep - PVDF provides a great balance of chemical compatibility and low background noise for sensitive UV detection
• Protein Analysis - Ultra-low protein binding ensures that your expensive protein samples are not lost to the filter matrix
• Western Blotting - Optimized for often used in preparing samples for downstream blotting techniques where purity is paramount
• Clarification of Biologicals - Perfect for removing particulates from biological fluids without removing the target biomolecules
• Biological Fluid Analysis - Protects sensitive downstream instruments from removing particulates that can cause system failure
• General Laboratory Filtration - Increases workflow efficiency by protecting analytical instruments without sacrificing flow rates