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Whatman® 1PS phase separator filter papers

circles, diam. 240 mm, pack of 100

Z689793, separation filter papers, phase separation filter papers




pack of 100


Whatman 2200-240
Whatman Article No. 28418828 (US reference)


240 mm

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General description

The Whatman 1PS Phase Separator is a high-grade filter paper impregnated with a stabilized silicone that renders it hydrophobic, retaining the aqueous phase and passing the solvent phase through.

Features and Benefits:
  • Ease of use – no special training required
  • Any number of separations can be processed together
  • Staff involvement in routine separations is at a minimum

Automatic Cut-Off, Separatory Funnel Replacement
After being shaken, the mixed phases are simply poured directly into the 1PS circle which is quadrant-folded in a funnel. The separation is extremely rapid so it is unnecessary to wait until the two phases have settled into separate layers. Droplets are automatically separated after only a few moments, giving a solvent phase completely free of the aqueous phase.

In many applications, 1PS 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. This feature is particularly important when carrying out a large number of routine solvent extractions at the same time. Samples can be shaken with solvent in stoppered conical flasks or test tubes and transferred directly to funnels containing 1PS.

Unsupervised Separation
A chief benefit of the 1PS method is that cut-off is automatic and complete just as soon as the solvent phase has passed through*. The result is no skilled operators are required.

* Water may break through upon prolonged standing.

Other Notes

Field of Use : For internal research use only. Products are not intended for diagnostic use or resale.

Legal Information

Whatman is a registered trademark of Cytiva

Certificate of Analysis

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Certificate of Origin

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