Specification Brand : PROGLASS BulletPoint1 : Capacity of 250mL BulletPoint2 : 24/40 joint BulletPoint3 : With glass spring stopcock BulletPoint4 : Made of borosilicate glass Capacity : 500 milliliters Color : Clear ExternallyAssignedProductIdentifier1 : 0734602080497 ExternallyAssignedProductIdentifier2 : 734602080497 ItemName : Proglass 250mL Airless-Ware Reaction Storage Schlenk Flask with 24/40 Joint and Glass Spring Stopcock ItemTypeKeyword : science-lab-reaction-kettle-flasks Manufacturer : PROGLASS Material : Glass NumberOfItems : 1 PartNumber : 734602080497 ProductDescription : Flasks are heavy wall designed, made by hand-blowing to ensure uniform wall thickness, made of high-quality borosilicate glass and annealed at 800 degree Celsius, can be heated directly in an open flame and can withstand typical laboratory thermal variations in Chemistry processes like heating and cooling. ProductSiteLaunchDate : 2017-09-02T07:00:00.000Z