video or animation on IG and IL chromatography Show also tro

video or animation on IG and IL chromatography. Show also troubleshooting and column packing with URL and tell why URL is helpful

URL is a web link regarding to correspomding topic, for example

URL - http://www.oid.ucla.edu/Webcast/chemistry/. Experimental Procedure for Part 2: Column Chromatography of a Simple Mixture