Pura Disc 13mm PVDF Syringe Filters, 0.45um, 50 Pk
Whatman SKU: 6791-1304

Whatman Puradisc PVDF Syringe Filters, 0.45 µm, 13 mm, 50/Pk - 6791-1304

Whatman has built such a strong track record in published methods that laboratories default to citing its name in standardized protocols. Syringe filters replace the separate holder and vacuum apparatus of bulk filtration with a single disposable unit, eliminating cleaning between samples. Hydrophilic surface modification shields hydrophobic backbone from protein and tolerates common chromatography solvents without degradation. Polyolefin construction sheds virtually no extractable material into the sample and resists degradation from routine sample matrices. When chromatographic methods demand particle-free injections, the column stays clean from run to run, protecting method performance and column life.

Technical Specifications

• Adsorptive loss of HPLC analytes stays immeasurably low
• Fluoropolymer chemistry resists microbial and fungal degradation
• Cast membrane structure releases no fibers, unlike depth-media prefilters
• Hydrochloric, dilute nitric, and up to 90% sulfuric acid cause no attack
• Limiting oxygen index runs high, supporting flame resistance and low smoke

Housing Specifications

• Minimal extractable release from the housing supports sensitive analytical work downstream
• Minimal intrinsic autofluorescence from the polypropylene housing supports background-sensitive fluorescence-based assay work downstream.
• Standardized luer connection geometry provides secure engagement with standard syringe tips
• Withstands standard 121°C steam autoclave cycles without softening or structural distortion

Clarify your routine aqueous samples in a single pass and cut down on juggling multiple filter types at the bench. General-purpose aqueous filtration supports the sample types you handle every day from reagent and buffer preparation through routine sample clarification. Request Whatman's lot documentation and performance history to support your protocol validation.

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

50

Pore Size (µm)

0.45

Prefilter (Yes/No)

No

Sterility

Nonsterile

Sterilization

Autoclavable 121°C

Volume Throughput (ml)

Up to 10ml

Wettability

Hydrophobic

• Mycotoxin Screening - Clarifies grain and food extracts ahead of HPLC analysis, supporting reliable detection of aflatoxins and other mycotoxins.
• Capillary Electrophoresis Prep - Clarifies CE sample buffers and matrices, supporting stable electropherogram baselines for accurate results.
• LC-MS Sample Prep - Delivers low-extractable filtrates that prevent ion suppression, supporting clean baselines for LC-MS analysis.
• QuEChERS Extract Prep - Removes co-extracted waxes and pigments from QuEChERS extracts, protecting GC-MS and LC-MS systems during pesticide testing.
• Immunochemistry Research - Delivers exceptional chemical resistance for mild organic mixtures used in sensitive immunochemical research applications.
• Dissolution Testing - Removes undissolved particles from timed USP 711 dissolution aliquots, preventing skewed potency and release results.