Plungers for Aqueous Chromatography Columns

Adjustable Plungers (also referred to as flow adapters) can be used when you do not want to fill the column completely with your media and you do not want any space at the top of the packing. When doing size exclusion or other conventional chromatography you may need to avoid having any fluid above the packing in the column. The plungers is adjusted to set on top of the media bed and prevents the top of the column packing from being disturbed by the flow.

Ascending flow chromatography can minimize bed compression and yield superior performance for larger columns. When doing ascending flow chromatography a bed support is needed at both the top and bottom of the column. If the column is completely filled with resin, an additional lower end plate (available as a replacement item) can be put on the top of the column. If the column is not completely filled you would need to use an adjustable plunger at the top of the column. Even if the column is completely filled a plunger is frequently used since it tends to be more convenient.

If extreme adjustment of the column length is required, 2 plungers may be used on a single column, one on the top and a second on the bottom. This doubles the available adjustment length.

The wetted materials in these plungers match those of the column and include polypropylene, nitrile rubber, and nylon.

You should select a plunger that matches the inner diameter of your column.

Replacement grids, mesh, and O-rings are available for all of these plungers.

Plungers
Part Number Column Inner Diameter Adjustment Length Price
124101 0.6 cm 10 cm
124100 0.9 cm 10 cm
124108 1.5 cm 10 cm
124122 2.5 cm 16 cm
124136 5.0 cm 32 cm
124142 7.5 cm 32 cm
124146 10 cm 32 cm
124152 15 cm 32 cm

Replacement Parts
Column Inner Diameter Sealing O-ring Grid Mesh Snap Ring
0.6 cm
Part #: 124157

Part #: 124229

Part #: 124080

Part #: 124193

0.9 cm
Part #: 124158

Part #: 124230

Part #: 124080

Part #: 124194

1.5 cm
Part #: 124164

Part #: 124236

Part #: 124080

Part #: 124200

2.5 cm
Part #: 124170

Part #: 124242

Part #: 124080

Part #: 124206

5.0 cm
Part #: 124176

Part #: 124248

Part #: 124080

Part #: 124212

7.5 cm
Part #: 124178

Part #: 124250

Part #: 124082

Part #: 124216

10 cm
Part #: 124182

Part #: 124254

Part #: 124082

Part #: 124218

15 cm
Part #: 124188

Part #: 124260

Part #: 124082

Part #: 124224


Web Discount GIF
Exploded view of a plunger for a 2.5 cm diameter plunger.

Exploded view of a plunger for a 2.5 cm diameter plunger.

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