GD/XP Syringe Filter, Nylon Filteration Medium, 0.45um (150 pcs)
Whatman SKU: 6971-2504

Whatman GD/XP Nylon Syringe Filters, 0.45 µm, 25 mm, 150/Pk - 6971-2504

Whatman stages a coarse and a fine polypropylene layer ahead of the rated membrane in the GD/XP cartridge, clearing particulate load before it reaches metals-analysis-grade filtrate. Sample preparation for chromatography often ends with a syringe filter on the path to the vial. Naturally hydrophilic nylon accepts water-based samples without surfactant preconditioning and adds a layered prefilter for particulate-laden samples. Polypropylene construction resists chemical degradation from routine sample matrices while keeping the sample chemically unaltered across the pass and routes flow to minimize backpressure in service. When method reproducibility rests on consistent sample prep, syringe filtration holds that standard injection after injection.

Technical Specifications

• Absolute pore size rating provides consistent results across filtration protocols
• Nylon's polar amide backbone gives the membrane high native affinity for nucleic acids
• Nylon's amide functional groups selectively adsorb gaseous nitric acid, a documented basis for environmental air-quality monitoring filters.
• Nylon 6,6 resin melts at approximately 264°C
• Non-sterile nylon suits HPLC and GC sample clarification ahead of instrument analysis

Housing Specifications

• Injection-molded polypropylene housings accommodate threaded NPT and hose-barb port options beyond the standard luer taper
• Resists stress cracking from aqueous salt and buffer solutions
• Dilute aqueous acids, bases, and alcohols used in sample prep do not degrade the polypropylene housing
• Translucent housing wall allows visual confirmation of sample flow during filtration

Clarify your routine aqueous samples in a single pass and cut down on juggling multiple filter types at the bench. Consistent aqueous clarification clears particulates without slowing your bench routine across the buffers and reagents your day-to-day prep depends on. 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

4.6cm²

Holdup Volume

1.4ml

Material

Nylon

Maximum Operating Pressure

75psi

Maximum Operating Temperature (°C)

121°C

Pack Count

150

Pore Size (µm)

0.45

Prefilter (Yes/No)

Yes

Prefilter Material

Polypropylene (10µm + 5µm)

Sterility

Nonsterile

Sterilization

Autoclavable 121°C

Volume Throughput (ml)

Up to 100ml

Wettability

Hydrophilic

• Dissolution Testing - Supports accurate drug release profiles by clarifying dissolution samples ahead of HPLC quantitation in QC labs.
• Biofuel Particulate Testing - Removes particulate debris from biodiesel and fuel samples ahead of chromatographic QC analysis in fuel testing labs.
• QuEChERS Cleanup - Clarifies acetonitrile food extracts after dispersive cleanup, protecting GC-MS and LC-MS systems during pesticide screening.
• HPLC Pump Protection - Filters reservoir solvent to prevent particulates from abrading pump check valves and seals over time.
• Environmental Extract Prep - Clarifies water and soil extracts ahead of trace metals or pesticide-residue analysis for accurate results.
• IC Column Protection - Clarifies aqueous samples ahead of anion and cation analysis, guarding ion-exchange columns against particulate fouling.