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RCT®-Accessories: Extension Piece

RCT®-Accessories: Extension Piece
Product specification For joining of THOMACHROM ® -glass bodies for column extension,... more

Product specification

For joining of THOMACHROM®-glass bodies for column extension, temporarily for settling of the adsorbens, and for placing the filling funnel. Sealing rings made of PTFE or FPM, extension piece made of PVC-U (standard) or of solvent-resistant SR material (PTFE or PP).

General Information A series of chromatography columns in eight different sizes for... more

General Information

A series of chromatography columns in eight different sizes for analytical and preparative purposes. The glass bodies are made of borosilicate glass, flange-connected on both sides, and bear fixedly two caps with the sealing O-rings belonging to it. Caps with the largest diameters of 75 and 100 mm resp. have threaded bolts made of V2A and are screwed with nuts to the end plates. Caps and end plates of smaller sizes are screwed together with threads. In this case the caps bear the sealing rings of the cooling jacket. The collars of the cooling jacket fit tightly on the sealing rings of the cooling jacket. Is no cooling jacket mounted, the sealing rings serve as shock absorbers to avoid break when the column is put down on the laboratory desk. Diameters of 75 mm and 100 mm resp. are not supplied with cooling jacket. For temperature control the use of Calorex heat-exchange and cooling tubing (item 93168) is recommended.

The bottom end plates bear a PTFE fabric with a mesh size of approx. 10 µm as support for the adsorbent material. The fabric is fixed by means of a locking ring and is placed on a PTFE grid of larger mesh size. In this grid the fluid flows with minimum dead volume to the capillary bore of the end plate.

The column end plates have thread bores for accommodation of MULTICHROM connections, the upper end plate having an additional one for the bleed screw. The central bore has an internal diameter of 1.0 mm.

The fluid contacting parts of the column, the top and bottom ends, are usually made of PVC. For use with liquids, to which these materials are not resistant, ends made of PTFE are to be used. Therefore, only these two exchange parts are required for resetting of the column, and already with the usual caps made of PVC a substantial solvent resistance is obtained. When working for a longer time with media particularly aggressive to PVC, such as chloroform, dimethylformamide etc, the glass bodies with caps made of stainless steel, PTFE or PP have to be used.

We strongly emphasize that standard seals are made of the materials FPM and NBR. It is possible to substitute certain seals for those made the material FFKM. The THOMACHROM® system with its many combinations offers appropriate instrumental solutions for pressures up to 15 bar and for all solvents, particularly for preparative purposes.

Item Image Design1 Inside Ø column
mm
Unit
piece
Price
Euro*
Buy
93401
ST 6 1 67.00
93402
ST 9 1 75.00
93403
ST 15 1 85.00
93404
ST 20 1 100.00
93405
ST 25 1 126.00
93406
ST 50 1 284.00
93407
ST 75 1 305.00
93408
ST 100 1 645.00
934019
SR 6 1 139.00
934029
SR 9 1 159.00
934039
SR 15 1 192.00
934049
SR 20 1 228.00
934059
SR 25 1 284.00
934069
SR 50 1 448.00
934079
SR 75 1 609.00
934089
SR 100 1 755.00
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