Specification Brand : United Scientific BulletPoint1 : 50mL Capacity, .08mL tolerance, 14/23 stopper size BulletPoint2 : Clear borosilicate glass volumetric flasks are manufactured as per ASTM E288 Class A serialized glassware specifications. Calibrated to contain (TC), these flasks are designed with enamel printing and diamond etched graduation lines. BulletPoint3 : Feature heavy-duty and uniform wall thickness along with a wide mouth design for easy pipette access. Each flask comes with a printed calibration certificate, a penny head glass stopper, and a polyethylene stopper. BulletPoint4 : Meets Class A specifications per ASTM E288 BulletPoint5 : Individually certified and serialized Capacity : 50 milliliters Color : One Color ExternallyAssignedProductIdentifier : 7635732266146 ExternallyAssignedProductIdentifier1 : 840287257960 ExternallyAssignedProductIdentifier2 : 0840287257960 IncludedComponents : Volumetric Flask ItemName : United Scientific® Glassco Volumetric Flask, Class A, Individually Certified, Wide Mouth, 50 mL ItemPackageDimensions_Height : 2.56 inches ItemPackageDimensions_Length : 6.89 inches ItemPackageDimensions_Width : 2.56 inches ItemPackageQuantity : 1 ItemTypeKeyword : volumetric-flasks Manufacturer : United Scientific Material : Borosilicate Glass ModelName : Wingxaoyy ModelNumber : FGWM050 NumberOfItems : 1 PackageLevel : unit PartNumber : FGWM050 ProductDescription : Lodine flask with ground-in glass stopper 50ml,Erlenmeyer flask with tick mark,Iodine volumetric flask,Triangular flask with lid