Cryotube with Gasket, Without Graduation, Conical Bottom, With Hinged Screw Cap is commonly abbreviated as CTGWG-CB-HSC. This type of cryotube is designed for the storage of biological samples in ultra-low temperature conditions, typically in cryogenic freezers. The presence of a gasket, lack of graduation marks, conical bottom, and a hinged screw cap are specific features that make it suitable for secure sample storage in extreme cold environments.