2018/2/1 · Five vial types in a 10 mL/10R format were used in the present study. Table 1 summarizes the nominal glass composition, thermal expansion coefficient, the presence and type of coating surface modification, and the surface properties of these vials as provided by the vendors. 27 Uncoated Expansion 33 and Expansion 51 vials were purchased at Schott North America, Inc. (Elmsford, NY) and