Serum bottles are for use with any drying chamber with 0.5 or 0.25 inch valves. They provide long-term preservation of freeze-dried samples. Stoppers, hand crimpers and aluminum seals are available. Standard autosample vials are 0.75 ml and 1.5 ml size. The 0.75 ml size accepts 8 mm seals. The 1.5 ml size accepts 11 mm seals. The 5 to 100 ml sizes accept 20 mm stoppers and seals. Made of Wheaton “400” borosilicate glass.