Specification Brand : United Scientific BulletPoint1 : 250mL Capacity, .12mL tolerance, 19/26 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 : 250 milliliters Color : One Color ExternallyAssignedProductIdentifier : 7635732266146 ExternallyAssignedProductIdentifier1 : 840287257991 ExternallyAssignedProductIdentifier2 : 0840287257991 IncludedComponents : Volumetric Flask ItemName : United Scientific® Glassco Volumetric Flask, Class A, Individually Certified, Wide Mouth, 250 mL ItemPackageDimensions_Height : 26.6 centimeters ItemPackageDimensions_Length : 9.9 centimeters ItemPackageDimensions_Width : 10.2 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : volumetric-flasks Manufacturer : United Scientific Material : Borosilicate Glass ModelName : Wingxaoyy ModelNumber : FGWM250 NumberOfItems : 1 PackageLevel : unit PartNumber : FGWM250 ProductDescription : Lodine flask with ground-in glass stopper 50ml,Erlenmeyer flask with tick mark,Iodine volumetric flask,Triangular flask with lid