SGD’s tubular vials are made of neutral borosilicate glass of 5.0 expansion coefficient. The tube used by SGD is supplied by globally renowned tubing manufacturers as per the specifications of the clients. We offer a complete range as per the ISO8362-1 standard, as well as custom-made design as per customer’s request. Vials can also be customized with features, such as Blow Back (EU and US), flat bottom for lyophilization process, crimp and screw neck finishes, and optional on-line Sulphur coating.