Description
Specifications Table
Product Name – Whatman GD/Xp Syringe Filter
Quantity/Pack Size – 25mm, Pack of 150 / Pack of 1500
Form – Syringe Filter
Grade – GD/Xp (High-Purity, Sterile)
Application – HPLC, GC, Aqueous/Organic Solvent Filtration
Membrane Material – Nylon (NYL), PVDF, PTFE, PES, Polypropylene (PP), Dual-Phase Polypropylene (DPPP)
Pore Size – 0.45um
Diameter – 25mm
Compatibility – Aqueous & Organic Solvents (varies by membrane)
Product Overview
Whatman GD/Xp syringe filters are engineered for high-performance filtration in critical laboratory applications, ensuring particle-free samples for HPLC, GC, and other analytical techniques. The 0.45?m pore size effectively removes particulate matter while maintaining high flow rates, minimizing sample loss. Constructed with a robust polypropylene housing, these filters resist chemical degradation, making them compatible with a wide range of solvents?from aqueous solutions to aggressive organic compounds. The GD/Xp series is gamma-irradiated for sterility, eliminating the risk of microbial contamination in sensitive experiments. Membrane options include Nylon (NYL) for broad chemical compatibility, PVDF for low protein binding, PTFE for hydrophobic applications, PES for high flow rates, PP for cost-effective general use, and DPPP for dual-phase separations. Each filter undergoes rigorous quality control to meet ISO 9001 standards, guaranteeing consistency and reliability. The 25mm diameter fits standard syringes, while the color-coded housing allows quick membrane identification. Whether used for solvent clarification, sample prep, or particle removal, these filters deliver reproducible results with minimal extractables, ensuring data integrity in research and industrial labs.
FAQs
1. What is the difference between NYL and PVDF membranes in Whatman GD/Xp filters?
NYL (Nylon) membranes offer broad chemical compatibility and are ideal for aqueous and organic solvents, while PVDF membranes provide lower protein binding and better resistance to harsh solvents like DMSO or THF.
2. Can these filters be autoclaved for reuse?
No, Whatman GD/Xp syringe filters are designed for single-use applications. Autoclaving may compromise the membrane integrity and sterility, leading to inconsistent filtration performance.
3. Are these filters compatible with HPLC mobile phases containing acetonitrile?
Yes, but membrane selection is critical. PTFE and PVDF membranes are highly compatible with acetonitrile, while NYL and PES may have limited resistance depending on the concentration.
4. How should these filters be stored to maintain sterility?
Store the filters in their original sealed packaging at room temperature (15?30?C) in a dry, clean environment. Avoid exposure to direct sunlight or humidity, which could degrade the membrane or housing.
5. What alternatives exist for filtering viscous samples with these syringe filters?
For viscous samples, pre-filtering with a larger pore size (e.g., 1.0?m or 5.0?m) or using a filter with a larger diameter (e.g., 30mm) can improve flow rates and prevent clogging.
