CUS 2 clean up station. The behrotest® clean up column with glass frit corresponds exactly to the provisions of ISO 9377 2. The practical twin stand provides safe support for two complete clean up units with dropping funnel clean up columns and Kuderna Danish flasks. Thus the complete clean up procedure can be carried out for two samples simultaneously without delays due to time consuming equipment or sample manipulation. Clean up Station supplied as: stand 2 graduated round bottom flasks 100ml 2 columns with grade 2 frits.