Whatman* 1 PS* Phase Separator Paper

A high grade filter paper impregnated with a stabilized silicone that renders it hydrophobic, retaining the aqueous phase and passing through the solvent phase. Can replace the use of separatory funnels. The solvent phase flows through the paper quickly and cleanly. It then stops automatically, leaving the aqueous phase completely in the paper. Samples can be shaken with solvent in stoppered conical flasks or test tubes and transferred directly to funnels containing 1 PS. A chief benefit of the 1 PS method is that cutoff is automatic and complete just as soon as the solvent phase has passed through.