The eXtreme PES filter vial has a patented design for easy compression and complete sample filtration. It offers multi-layer filtration for viscous samples, and samples with up to 30% solid particulates, and can replace lengthy SPE sample prep. The 0.2uM membrane is ideal for GCMS and UHPLC systems with small ID tubing (< 0.13mm) to remove sample particulates and prolong the life of system components such as the autosampler needle, injection port and valve, and column inlet tubing. PES is recommended for applications such as ion chromatography and antibody and protein analysis in mammalian cell culture, using aqueous buffered sample diluents with low or no organic solvents. Refer to the solvent compatibility table for a complete list of recommended solvents. Use in any HPLC or GC autosampler rack that accepts 12x32mm 2mL vials. Needle stroke must be set to 5mm from the bottom of the vial. Requires a minimum sample volume of 250 uL, maximum sample fill volume 450 uL, filter dead volume 120 uL. Replacement for 220-91521-51, and can be substituted for 220-91521-55 (this was 0.45um eXtreme PES and has no equivalent in a 200/pk size.)