Pura Disc 25mm Nylon Syringe Filters, 0.45um, 50 Pk
Whatman SKU: 6750-2504

Whatman Puradisc Nylon Syringe Filters, 0.45 µm, 25 mm, 50/Pk - 6750-2504

Whatman has built such a strong track record in published methods that laboratories default to citing its name in standardized protocols. Sample preparation for chromatography often ends with a syringe filter on the path to the vial. Nylon wets on contact with aqueous samples and delivers sharp particle cutoff at the rated pore size. Thermal-bonded PP construction leaves no seam for sample to bypass the membrane while sustaining efficient flow on viscous samples and keeps the sample chemically unaltered across the pass. Where analytical results depend on clean samples, the preparation step stays consistent from sample to sample through a pre-tested syringe filter.

Technical Specifications

• Resonance-stabilized amide bonds anchor nylon's resistance to alkaline hydrolysis
• Polar amide backbone gives high native affinity for nucleic acids
• DMSO compatibility extends across sample-preparation chemistries
• Ester- and alcohol-resistant across common laboratory sample preparations
• Filtration clarifies HPLC mobile phase buffers of particulates

Housing Specifications

• Standardized luer connection geometry provides secure engagement with standard syringe tips
• Stable across the full aqueous pH range in routine sample work
• Thermal-bonded construction keeps adhesives out of the fluid path
• Rigid polypropylene body maintains its geometry through routine filtration pressure

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 across your water-analysis and general analytical workflows. 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)

2.0 bar (29 psi)

Burst Pressure (psi)

75psi

Connection Type

Luer-Lok/ Luer Slip

Construction

Polypropylene

Diameter

25mm

Filtration Area

4.2cm²

Holdup Volume

<100µl

Material

Nylon

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 100ml

Wettability

Hydrophilic

• Chemical Analysis - Withstands aggressive bases and alcohols, ideal for tough chemical compatibility filtration challenges in routine analysis.
• Amino Acid Profiling - Clarifies aqueous sample digests for HPLC and LC-MS amino acid analysis in food, nutrition, and fermentation monitoring.
• GC Sample Prep - Clarifies aqueous and organic extracts ahead of gas chromatography injection, protecting inlets from particulate fouling.
• Cosmetics Batch Testing - Filters aqueous lotions, serums, and personal care products for particulate QC and potency assay sampling.
• Fermentation Monitoring - Clarifies samples from microbial fermentation for rapid analyte measurement of glucose, ethanol, and metabolite levels.
• Cannabis Potency Testing - Clarifies cannabinoid extracts in ethanol or hydrocarbon solvents ahead of HPLC potency and pesticide-residue analysis.