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PYREX Kuderna-Danish Instruments (4mL and 500mL only)
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This complete PYREX Kuderna-Danish Concentrator apparatus consists of a 3-ball Snyder column with 24/40 Standard Taper joints (2158-3CO), a 250mL flask with a 24/40 outer Standard Taper upper joint and 19/22 inner Standard Taper lower joint, and a 10mL graduated tube with 19/22 outer Standard Taper joint. These PYREX Kuderna-Danish concentrator tubes do not have spring hooks but instead use Keck clamps to attach to flasks.
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PYREX Kuderna-Danish Instruments (25mL and 250mL only)
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This complete PYREX Kuderna-Danish Concentrator apparatus consists of a 3-ball Snyder column with 24/40 Standard Taper joints (2158-3CO), a 250mL flask with a 24/40 outer Standard Taper upper joint and 19/22 inner Standard Taper lower joint, and a 10mL graduated tube with 19/22 outer Standard Taper joint. These PYREX Kuderna-Danish concentrator tubes do not have spring hooks but instead use Keck clamps to attach to flasks.
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PYREX Kuderna-Danish Instruments (1L only)
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These 1L PYREX Kuderna Danish Concentrators are supplied with Keck clamps instead of spring hooks. The complete apparatus consists of a 3-Ball Snyder column (with 24/40 Standard Taper joints), a 1L flask (with 24/40 Standard Taper top and 19/22 Standard Taper lower joint), and a graduated 25mL tube with an outer 19/22 Standard Taper joint. The tube graduations go from 0 to 2mL in 0.1mL increments and from 3mL on in 1.0mL increments. All columns have venting dimples.
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PYREX Kuderna-Danish Tubes (1mL-15mL)
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This innovative PYREX capacity jacketed Kuderna-Danish concentrator tube circulates hot water through the jacket to boil the solvent during extraction/concentration. The bottom portion of the tube is never heated, so samples won't boil dry. The concentration automatically stops when the solvent sinks below the jacket. Lab technician time is saved by eliminating the need to watch evaporations closely to avoid boiling dry. Serrated tubulations allow for easy tubing connections.
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PYREX Kuderna-Danish Tubes (100mL-125mL)
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These innovative PYREX concentrator tubes combine the concepts of a Kuderna-Danish flask and tube into one piece of glass apparatus. The capacity permits sufficient solvent capacity for the full extraction process. They have Standard Taper outer joints, are supplied with one Keck clamp and are designed for use with the PYREX Accelerated One-Step extractor/concentrator, it is jacketed and permits circulation of hot water through the jacket to boil the solvent during extraction/concentration. The bottom portion of the tube is never heated, so the sample won't boil dry. Threaded tubulations on the water jacket are 8mm. I.D. This product requires the assorted hardware (6 connectors and 12 washers) found in No. 2158-CW for use with the threaded tubulations on the water jacket.
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