APPLICATION - Standard Autosampler Vial for HPLC & GC Chromatography, sample vials can be used for high performance liquid chromatography and gas chromatography for reliable analysis results 1 of Syringe Filter 100 PCs PTFE Hydrophobic Membrane Filtration, 25mm Disc Diameter 0.22um Pore Size, HPLC and GC Needle Filter, High Throughput Lab