|- Diffusion Cells / Franz Diffusion Cells / Franz Cells -|
Equipment that measures permeation through membranes
|Franz Cells||Side - Bi - Side Cells||In Line Cells||Flow Type Franz Cells||Cell Stands|
|Nail Adapter for Franz Cells||Franz Cell Accessories||Answers to Frequently Asked Questions|
|In Line Diffusion Cell||SES Thermostat SC100||Franz Cell System|
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|Side - Bi - Side Cells|
Our horizontal diffusion cells are glass diffusion
cells like Crown Glass Company's Side-Bi-Side cells. Standard Horizontal
Cells have orifice diameters from 5mm to 15mm. Cell volumes are
dependent on orifice diameter and customer specifications. After a
membrane is placed between the cell halves, the Cell Clamp is placed
around them. The adjusting knob is then gently tightened to hold the
glass halves and membrane or device together. The assembly is then
located over the stirring magnets of an H-Series Stirrer by placing the
holes in the clamp over pins on the top of the unit. These cells are
suited to iontophoresis work and are easily customized with additional
porting, amberizing, etc.
The drawing below is of a Side-Bi-Side Cell assembled together with the membrane, Cell Clamp, and stirbars, again as viewed from above. The clamping surfaces of Side-Bi-Side Cells are ground flat and will not leak even with thin dialysis membranes between them. Some researchers add vacuum grease to ensure a good seal with very thin membranes. We also can provide Teflon foam gaskets in various sizes if the membranes are uneven and need "filler" to help seal them. Note also the short piece of tubing connecting the heating jackets of both halves of the cell. We have chosen to illustrate the flow moving through the cell in one direction, but either direction is acceptable.
The third drawing is again of the same Side-Bi-Side Cell but showing an oblique view.
The fourth drawing is of the same Side-Bi-Side Cell but viewed from straight on. We have labeled more of the components to help illustrate the use of the cell.
The drawing below is of a Valia-Chien Cell which is generally the same as a Side-Bi-Side Cell except that there is an additional pinchclamp to hold the membrane in place. The membrane shown is a cornea and the joint is a spherical joint. Valia-Chien Cells are also available with o-ring, flat ground o-ring, or flat flange joints. Please note that the Cell Clamp for a Valia-Chien Cell is not the same as the Cell Clamp for a Side-Bi-Side Cell and that clamps for one variety of cell will not work properly for the other cells. There are also different stirrers for each kind of cell as the center-to-center distance for the stirbars in a Side-Bi-Side Cell is 29mm and the corresponding distance in Valia-Chien Cell is 41mm. For corneal work the Valia-Chien Cell must be used because there is no practical option for a Side-Bi-Side Cell to have a spherical surface. For nail permeation work we have Nail Adapters for use with a Side-Bi-Side Cell.
The sixth drawing is an oblique view of a Side-Bi-Side Cell with extra porting for iontophoresis work. Notice that one stopper on each side of the cell has a hole through it for running a wire with an electrode into the inner volumes of the cell.
Information - Part numbers are made up of four 2-character codes
separated by hyphens.
|H-Series Stirrers for SES or Crown Glass - Side-Bi-Side or Valia-Chien Cells|
Diffusion cells must be ordered separately.
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||SES GmbH - Analytical Systems|
|Friedhofstr. 7-9 - 55234 Bechenheim / Germany|
|phone.: +49 6736 1301||fax: +49 6736 1305||Email: email@example.com|