Metacelsus - 26-11-2014 at 11:53
Natland International provides free 200g samples of chromatography grade silica gel to people connected to an educational institution. I received
mine today. For basically anyone with a .edu email address, this is a great opportunity. The site is: http://www.natland.com/silica-gel.html
careysub - 26-11-2014 at 12:42
I have been looking at Daraclear, an acidic beer clarification silica gel as a possible TLC prep material. $6 for 100 g.
It has a good particle size (19 microns):
http://www.ebay.com/itm/100g-of-Powdered-Silica-gel-for-Beer...