Organic Column Plungers

Our organic series adjustable plungers are ideal for use with our organic series low pressure columns. The only wetted material in these plungers is PTFE (polytetrafluoroethylene, an intert plastic) making them suitable for use with almost any chromatogaphy solvent.

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.

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
125100 0.6 cm 10 cm
125101 0.9 cm 10 cm
125109 1.5 cm 10 cm
125123 2.5 cm 16 cm
125139 5.0 cm 32 cm
125141 7.5 cm 32 cm
125147 10 cm 32 cm
125149 15 cm 32 cm

Replacement Parts
Column Inner Diameter Sealing O-ring Grid Mesh Snap Ring
0.6 cm
Part #: 125154

Part #: 125222

Part #: 124086

Part #: 125192

0.9 cm
Part #: 125155

Part #: 125223

Part #: 124086

Part #: 125193

1.5 cm
Part #: 125163

Part #: 125229

Part #: 124086

Part #: 125199

2.5 cm
Part #: 125171

Part #: 125235

Part #: 124086

Part #: 124205

5.0 cm
Part #: 125179

Part #: 125241

Part #: 124086

Part #: 125211

7.5 cm
Part #: 125183

Part #: 125243

Part #: 124088

Part #: 125213

10 cm
Part #: 125187

Part #: 125247

Part #: 124088

Part #: 125217

15 cm
Part #: 125189

Part #: 125249

Part #: 124088

Part #: 125218


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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