Pura Disc 25mm Nylon Syringe Filters, 0.45um, 200 Pk
Whatman SKU: 6751-2504

Whatman Puradisc Nylon Syringe Filters, 0.45 µm, 25 mm, 200/Pk - 6751-2504

Whatman standardizes its manufacturing platform to the point that consistency and thorough lot-level records come as a default, exactly what analytical laboratory work demands. Individually packaged and pre-tested, a syringe filter needs no functional check before use the way a shared reusable holder does. Nylon withstands elevated differential pressures and fits routine analytical sample preparation. Thermal-bonded PP construction leaves no seam for sample to bypass the membrane and maintains structural integrity through elevated-temperature sample preparation. Where bench-scale prep must move quickly from one sample to the next, each sample starts as clean as the last without a carry-over risk or a cleaning step between uses.

Technical Specifications

• Resonance-stabilized amide bonds anchor nylon's resistance to alkaline hydrolysis
• Non-fibrous membrane structure resists media shedding into the filtrate
• Autoclaving at 121°C for 30 minutes leaves pore structure intact
• DMSO compatibility extends across sample-preparation chemistries
• Compatible with most HPLC mobile phases for sample clarification

Housing Specifications

• Translucent housing wall allows visual confirmation of sample flow during filtration
• Rigid polypropylene body maintains its geometry through routine filtration pressure
• Minimal ionic background from the polypropylene housing supports ion chromatography and trace-metal ICP-MS sample preparation.
• Thermal-bonded construction keeps adhesives out of the fluid path

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

200

Pore Size (µm)

0.45

Prefilter (Yes/No)

No

Sterility

Nonsterile

Sterilization

Autoclavable 121°C

Volume Throughput (ml)

Up to 100ml

Wettability

Hydrophilic

• Buffer Filtration - Delivers high mechanical strength for efficient clarification of alkaline buffers and aqueous reagents in the lab.
• GC Sample Prep - Clarifies aqueous and organic extracts ahead of gas chromatography injection, protecting inlets from particulate fouling.
• IC Column Protection - Clarifies aqueous samples ahead of anion and cation analysis, guarding ion-exchange columns against particulate fouling.
• Water Quality Monitoring - Removes suspended solids from environmental water samples for routine total suspended solids testing.
• Column Protection - Extends the life of analytical columns by reliably removing micro-particulates from aqueous mobile phases in HPLC.
• Fermentation Monitoring - Clarifies samples from microbial fermentation for rapid analyte measurement of glucose, ethanol, and metabolite levels.