Vacuum manifolds, when used with Solid Phase Extraction cartridges, allow extraction, elution, and clean-up of many samples simultaneously. Manifolds consist of a glass chamber to which vacuum is applied. Female luer connectors on the manifold lid in series with individual vacuum control valves permit samples or elution solvents to be drawn through the SPE cartridges and into the vacuum chamber. Solvent contacts only polypropylene surfaces for sample integrity, and volumes up to 20 ml per sample can be collected. Racks are placed in the chamber before drawing vacuum, which can carry a variety of collection vessels such as test tubes, autosampler vials, volumetric flasks, etc. Eluants are deposited directly into collection vessels via polypropylene needles. These manifolds work with any luer hub sample-prep device. Individual vacuum control valves permit adjustment of the flow rate for each sample. A vacuum gauge and bleed valve assembly (included) allows control and monitoring of the vacuum applied to the chamber. The 12 Position Vacuum Manifold System allows the simultaneous clean up of 1 to 12 samples while the 24 Position Vacuum Manifold System will clean 1 to 24 samples. These Vacuum Manifolds make sample clean up quick, easy and economical.

Drying Attachments: Vacuum Manifold Drying Attachments are used in conjunction with the vacuum manifold to concentrate samples recovered from SPE columns, or to dry sorbent beds in SPE columns prior to introduction of a sample. The drying attachment will direct a flow of air or nitrogen into the sample collection vessels to dry eluants prior to further analysis. Adapters (Cat. No. 61016) can be used to connect SPE columns to the drying attachments, to dry the columns before final elution.