YMC provides dynamic axial compression columns suited for various separation scales such as laboratory-, pilot- and industrial-scale. They are automated self packing columns that allow for an easy, cost-effective refill of packing material that results in a column bed yielding superior durability and reproducibility. DAD series which can be operated easy unpacking with downward cylinder driving direction, DAU series which are compact design with upward cylinder driving direction, and rotatable custom-designed DAR series are available.
In packing operation of axially compression columns, pressurizing by cylinder followed by loading slurry into columns can create homogenous packed bed. Packed bed pressurized by cylinder realizes high performance columns which are high densely and homogenously packed. Prevention of voids by constant pressurization also realizes long column life as a result of improvement of durability. (Axial Compression Technology)
The slurry container provides excellent distribution of packing material and allows for a “homogenous” slurry that can be automatically loaded into the DAU / DAD column by simply switching a valve. Throughout the operation from slurry preparation to filling slurry, safety and hygiene can be achieved.
The data on the right hand side shows repacking data obtained by using a 50 mmI.D. DAU column (DAU-50). After 7 times repacking, plates/m and Tf are still as good as the initial state.
The chromatography on the right hand side are a scale-up example from an analytical 4.6 mmI.D. column to a 50 mmI.D. DAU column. This indicates that the very similar separation pattern of analytical scale is also reproducible at the preparative scale.
Column :YMC-Pack C8 (S-5 μm, 200 Å)
150 X 4.6 mmI.D.
Flow rate : 0.8 mL/min
Column : YMC*GEL C8 (S-10 μm, 200 Å)
150 X 50 mmI.D.
Eluent : A) water/TFA (100/0.1)
B) acetonitrile/TFA (100/0.1)
25-60%B (0-20 min)
Flow rate : 100 mL/min
Temperature : 37℃
Detection : UV at 220 nm
DAU series : Driving direction of cylinder is upward. ( Catalog Download )
DAD series : Driving direction of cylinder is downward. ( Catalog Download )
Packing & Testing the YMC 10cm Dynamic Axial Compression (DAU) Column
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