Kuderna-Danish concentrators are used to concentrate volatile or semivolatile organics that have been extracted from wastewater. These have been recommended for EPA Methods 604, 606-613 and 625.

The Macro Set includes a 3 ball Snyder column, 500 ml flask and a 10 ml receiving vessel. The receiving vessel is graduated in 0.1 ml intervals for the final ml.

The Micro Set includes a 2 ball micro Snyder column and a 10 ml receiving vessel, graduated in 0.1 ml intervals for the final ml. The micro Snyder column is also sold separately.