Effective Oct. 1, 2009, or as contracts allow, BASF will increase its off-list prices in North America by U.S. $0.05 per pound for butanediol (BDO), tetrahydrofuran (THF), Polytetramethylene ether glycol (PolyTHF®), gamma-butyrolactone (GBL) and N-methylpyrrolidone (NMP).