Vacuum gauge assembly with valve, for Vac Elut 12 Manifold. The corrosion-resistant VacElut cartridge manifolds allow simultaneous processing of multiple Bond Elut cartridges. The clear glass base allows observation of the entire sample collection process. Its compact, linear design requires little bench space.;These manifolds are also able to accommodate larger 16 x 150 mm test tubes. These collection vessels can be used in combinatorial chemistry applications using large boiling tubes for collection of purified synthesis mixtures. They can be used for any SPE extraction where an elution volume greater than 10 mL is required.