You are now leaving Totseans. Click the link to continue to http://catalog2.corning.com/Lifesciences/en-BR/Shopping/ProductDetails.aspx?productid=6949%28Lifesciences%29&categoryname=Chemistry+Kits+%28Lifesciences%29|Chemistry Kits, Organic, Components with 24/40 Standard Taper Joints(Lifesciences).