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Kuderna-Danish Concentrators, Ungraduated, KONTES*
Developed for the concentration of trace amounts of sample dissolved in organic solvents. Useful in sample preparation before analysis with solvents such as petroleum ether or hexane.
Preparation involves filling the flask between 40 to 60% of capacity. To prevent sample loss initially, the column should be pre-wet with about 1ml of the solvent used in the concentration. Column is designed to speed evaporation with reduced hold-up.
Charged assembly should be placed over a vigorously boiling water bath. Water level should be maintained just below the lower [ST] joint and the apparatus mounted so that the lower rounded surface of the flask is bathed in steam.
NOTE: If solvent is allowed to escape, the entire assembly should be set up in a hood.
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