When using polypropylene reservoir SPE cartridge as sample preparation for environmental hormone analysis, plasticizer elutes and interference phthalate ester analysis. Glass SPE cartridges is effectively usable for sample preparing for those target compounds. Wetted part is composed of glass reservoir, glass filter and PTFE ring. Reservoir is available from the size : 10 mL, 20 mL, 50 mL and 100 mL ,depending on your application. Similarly to open chromatography tube, it is easy to operate. There are also various clean-up materials, use SPE cartridge in combination. Prior to use, ensure to check precautions described in the outline of the phthalate ester analysis.