Harrison Research Chromatotron Model 8924 Centrifugal Thin-Layer Chromatograph

Description

This auction is for 1
Harrison Research Chromatotron Model 8924 Centrifugal Thin-Layer Chromatograph
Please look at pics comes as it is shown
Can be seen in Colorado Springs Co 80910
chromatography
, a preparatory technique for separating
chemical mixtures
. It can also be referred to as
Centrifugal Thin-Layer Chromatography
. It is a common technique for isolating compounds and can be compared to
column chromatography
as a similar process. A common device used for this technique is a
Chromatotron
.
Here the
solvent
travels from the center of the circular chromatography
silica
layered on a plate towards the periphery. The entire system is kept covered in order to prevent
evaporation
of solvent while developing a
chromatogram
.
The wick at the center of system drips solvent into the system which the provides the mobile phase and moves the sample radially to form the sample spots of different compounds as
concentric rings
.
Continuous Annular chromatography
uses a stationary phase which is filled into an annular gap. The eluent is continuously fed across the whole bed interface also the feed is continuously fed at the top of the stationary however only at a certain point and not a cross the whole bed. The stationary phase is then rotated with a certain rotation speed. The rotation speed, eluent and feed flow rates have to be defined precisely such that the collector vessels only collect the correct substance. The retention times are transformed into the respective retention angles.
Found This info on Line
please feel free to E-mail me with any questions.
Check out my
other items
!
Be sure to add me to your
favorites list
!
Thanks For Looking