CHROMAFIL® Xtra syringe filters from Macherey-Nagel

These syringe filters are used for filtration of suspended matter from liquid samples, with high flow efficiency and little to no clogging. Designed specifically for chromatography, a HPLC Certification is available on the manufacturer website. With a polypropylene (PP) housing and ultrasonically sealed shells, CHROMAFIL® syringe filters have better solvent stability compared to acrylate and polystyrene filters - with no glue and therefore no extractable components from glue.
The thick rim of the housing is ideal for use with laboratory robots (e.g. Benchmate™). Filter inlet and outlet can be fitted to CHROMABOND® columns for selective sample preparation with the aid of a special adaptor. All filters can be autoclaved at 121 °C and 1.1 bar for 30 minutes.

CHROMAFIL® Xtra are labeled, colourless filters, especially useful for method validation and certification. The imprint allows direct identification of the membrane type, diameter, and pore size. With Luer lock entry for a safe connection on the "high pressure" entry side, and the symmetrical construction enables back-filtration at lower pressures. All CHROMAFIL® Xtra syringe filters have standard Luer slip outlet.

Polytetrafluorethylene (PTFE): Very hydrophobic membrane, ideal for filtration of non-polar liquids and gases. It is very resistant to various solvents as well as acids and bases. Flushing with alcohol, followed by water, makes the originally hydrophobic membrane more hydrophilic.