Specifications Table

Product Name – Whatman Anotop LC Syringe Filter
Quantity/Pack Size – 10mm, 0.2?m (Pack of 100) – 10mm, 0.2?m (Pack of 200) – 25mm, 0.2?m (Pack of 100) – 25mm, 0.2?m (Pack of 200)
Form – Syringe filter (hydrophilic PTFE membrane)
Grade – HPLC-certified, low extractables
Application – Sterile filtration, HPLC/GC sample prep, particle removal

Product Overview

The Whatman Anotop LC syringe filter is engineered for ultra-clean sample preparation, featuring a 0.2?m hydrophilic PTFE membrane that ensures sterile, particle-free filtration without sample contamination. Its low extractables profile and HPLC certification make it the preferred choice for critical applications where purity is non-negotiable. The filter?s robust polypropylene housing resists chemical degradation, while the pre-assembled design eliminates the risk of membrane damage during installation. Unlike generic filters, the Anotop LC?s consistent pore size distribution guarantees reliable retention of microorganisms and particulates, even at high flow rates. The membrane?s hydrophobic backing prevents sample bypass, ensuring complete filtration efficiency. Available in 10mm and 25mm diameters, it accommodates varying sample volumes while maintaining minimal hold-up volume to maximize recovery. The filter?s compatibility with aggressive solvents (including DMSO, acetonitrile, and methanol) further extends its utility across diverse lab workflows. Each unit undergoes rigorous quality control to meet ISO 9001 standards, providing researchers with reproducible results batch after batch. The absence of adhesives or binders in the membrane construction minimizes leachables, safeguarding sensitive analyses like LC-MS or ion chromatography. For labs prioritizing data integrity, the Anotop LC?s lot-specific certification documentation offers full traceability, a critical requirement for GLP/GMP environments.

FAQs

1. Can the Whatman Anotop LC filter be autoclaved for sterilization?

No, these filters are designed for single-use applications and are pre-sterilized via gamma irradiation. Autoclaving may compromise the membrane integrity or housing.

2. What is the maximum operating pressure for these syringe filters?

The filters can withstand up to 75 psi (5.2 bar) of differential pressure, though lower pressures are recommended for viscous samples to prevent membrane rupture.

3. Are there non-sterile versions of the Anotop LC available for non-critical applications?

No, all Anotop LC filters are sterilized to ensure consistency. For non-sterile needs, consider Whatman?s Puradisc or GD/XP syringe filters as alternatives.

4. How should these filters be stored to maintain their sterility?

Store the filters in their original packaging at room temperature (15?30?C) away from direct sunlight and moisture. Avoid exposure to volatile organic compounds that could permeate the packaging.

5. Is the PTFE membrane compatible with aqueous and organic solvents?

Yes, the hydrophilic PTFE membrane is chemically inert and compatible with both aqueous solutions and organic solvents like acetonitrile, methanol, and THF, though pre-wetting with a compatible solvent is recommended for organic samples.