GD/X 13mm Syringe Filter, Glass Microfiber Filteration Medium, 0.45um (150 pcs)
Whatman SKU: 6894-1304

Whatman GD/X Glass Fiber (GF) Syringe Filters, 0.45 µm, 13 mm, 150/Pk - 6894-1304

Whatman fits more prefiltration capacity into the GD/X housing without enlarging it, a space-efficient answer for samples too demanding for one filtration pass. Sample preparation for chromatography often ends with a syringe filter on the path to the vial. The glass microfiber matrix delivers nominal retention as a depth medium and draws aqueous samples through without preconditioning. The polypropylene housing routes flow to minimize backpressure in service while standing firm against aqueous acids, bases, and alcohols during regular handling and presses snugly against the membrane during the pass. When method reproducibility rests on consistent sample prep, syringe filtration holds that standard injection after injection.

Membrane Characteristics

• Glass fiber resists thermal shock from rapid temperature changes in sample preparation
• Resists adsorptive interaction with most common laboratory solvents and reagents
• Handles acidic, neutral, and mildly alkaline aqueous samples without matrix degradation
• Inert glass surface preserves sample pH and ionic strength throughout filtration
• High internal surface area supports broad particle interception throughout fiber depth

Housing Characteristics

• Minimal ionic background from the polypropylene housing supports ion chromatography and trace-metal ICP-MS sample preparation.
• The seal formed against the membrane blocks bypass at rated operating pressure
• Medical-grade polypropylene with broad chemical compatibility
• Rigid polypropylene body maintains its geometry through routine filtration pressure

Filtering buffers, reagents, and aqueous samples keeps your preparation moving and consistent. General-purpose aqueous filtration supports the sample types you handle every day across your water-analysis and general analytical workflows. Start a live chat with our customer support technicians for real-time updates on product availability, lead time, or your order status.

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

Burst Pressure (psi)

75psi

Connection Type

Luer-Lok/ Luer Slip

Construction

Polypropylene

Diameter

13mm

Filtration Area

1.3cm²

Holdup Volume

0.5ml

Material

Glass Micro Fiber

Maximum Operating Pressure

75psi

Maximum Operating Temperature (°C)

550°C

Pack Count

150

Pore Size (µm)

0.45

Prefilter (Yes/No)

Yes

Prefilter Material

Glass Microfiber (GMF)

Sterility

Nonsterile

Sterilization

Autoclavable 121°C

Volume Throughput (ml)

Up to 10ml

Wettability

Hydrophilic

• Mining Water Compliance - Glass fiber removes mineral sediment from mine drainage and process water ahead of metals and pH compliance testing.
• Geological Sample Prep - High dirt-loading capacity across two glass stages processes heavily loaded environmental extracts without early clogging.
• Cannabis Extract Analysis - Glass fiber removes lipid and plant wax particulates from cannabis extracts ahead of cannabinoid potency testing.
• Environmental Prep - Clarifies wastewater and soil analysis extracts efficiently, preventing premature clogging of finer analytical membranes.
• Milk and Dairy Analysis - Glass fiber prefiltration removes casein and fat globules from dairy samples ahead of HPLC and ion chromatography.
• Feed and Forage Analysis - Glass fiber removes undissolved feed matrix particles ahead of nutrient extraction and proximate composition analysis.