Ammonium persulfate

Ammonium persulfate is a reagent used in pouring SDS-PAGE gels. It is a source of free radicals that aid in the acrylamide polymerization [1]. This is the only SDS-PAGE gel reagent of which people keep their own stock. The solid powder is kept amongst the Trilab chemicals and is diluted to 10% m/v in dH2O. It can be freeze thawed and stored at -20C in 1 ml aliquots.