Specification Brand : Corning BulletPoint1 : Capacity: 25mL; height: 121mm; outer diameter: 40mm; tolerance: +/- 0.03mL BulletPoint2 : Made from borosilicate glass code 7740 BulletPoint3 : Flat bottom volumetric flask has a No. 9 standard taper stopper made from hollow glass - and a long neck style BulletPoint4 : Flask provides improved lab convenience - broad selection - and precise volume measurement BulletPoint5 : Manufactured to Class A tolerances as established by ASTM E-694 - ASTM E-542 - and ASTM E-288 Capacity : 25 milliliters ItemName : Corning Pyrex 5640-25 Borosilicate Glass 25mL +/- 0.03mL Flat Bottom Class A Heavy Duty Volumetric Flask, with Glass Standard Taper Stopper (Pack of 6) ItemPackageDimensions_Height : 9.398 centimeters ItemPackageDimensions_Length : 17.526 centimeters ItemPackageDimensions_Width : 13.97 centimeters ItemPackageQuantity : 1 ItemShape : Flat Bottom ItemTypeKeyword : volumetric-flasks Manufacturer : Corning Material : Borosilicate Glass ModelNumber : F4100-25 NumberOfItems : 6 PartNumber : 5640-25 ProductDescription : PYREX Class A Volumetric Flask with PYREX Glass Standard Taper Stopper Made from Type 1, Class A low expansion borosilicate glass, PYREX scientific glassware has become the accepted standard in chemistry labs across the globe. This volumetric laboratory flask is manufactured for optimum mechanical strength, along with chemical stability and thermal resistance. The strength of these borosilicate glass flasks has been increased appreciably through machine-blown bodies which are sealed to heavy-tubing necks tooled for standard taper glass stoppers (included). The lab glass flask’s graduation line is sharp and permanent and large white block letters make the inscription on the glass chemistry flask easy to read. The ideal chemical and heat resistant lab glassware for use in laboratories or for home or classroom science experiments, these scientific flasks are easy to clean or sterilize in autoclaves up to 121°C at 15 psi for 15 minutes. PYREX scientific glassware - trusted by scientists for 100 years Exceptional strength and stability. Brilliant transparency. Superior resistance to chemicals, contaminants, and drastic changes in temperature. These are among the key properties that enable PYREX glass to endure even the toughest laboratory environments, making it the indispensable partner for chemists and research scientists for more than 100 years. ProductSiteLaunchDate : 2011-01-07T08:00:01.000Z Size : 25 ml +/- 0.03 ml SpecificationMet : Astm Style : Class A Volumetric Flask SupplierDeclaredDgHzRegulation : not_applicable UnspscCode : 41121804