Digest n-VesselsDigest n-Vessels

Digest n-Vessel - the high purity PFA acid digestion vessel for ultra-trace analysis

The Digest n-Vessel is a high purity PFA semi-closed digestion vessel for the non-pressurised digestion of samples utilising a reflux method. The vessel comprises a lower digestion section screwed on to an upper reflux section incorporating a condensing n-tube permitting the continuous refluxing of the digest acid.

  • Made of high purity PFA for ultra-trace analysis
  • Digest samples safely with easy handling and cleaning of vessels
  • Reduced acid consumption and acid vapour pollution
  • Compact design for multiple sample digestions
  • Reduced foaming compared to glass digestion vessels
  • Can be heated with repeated cycling up to 260oC
  • Ideal for volatile elements like Hg, As, B

The Digest n-Vessel is ideal for the trace elemental analysis of geological, environmental and biological samples with large sample weights and with a wide variety of acids.

Principle of operation

As the sample is digested the acid vapour passes from the lower digestion section through to the upper reflux section where it condenses in the n-tube and accumulates in the collection tube. Once all the acid in the lower digestion section is vaporised and condensed in the upper collection tube, the pressure falls and the condensed acid is released back in to the lower digestion section allowing the process to be repeated until the sample digestion is complete. The upper reflux section includes a smaller opening at the top that allows additional acids/reagents to be added during the digestion process and also acts as a vent for any exhaust vapours.

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