Specification Brand : Karter Scientific BulletPoint1 : Capacity:50ml; Color: Clear; Material: 3.3 Borosilicate Glass; Size:160 X 47mm/6.3 X 1.85 inch (H*OD); Flask Neck Outer Diameter:15mm / 0.59 inch; Flask Neck Inner Diameter:10mm / 0.39 inch; Flask Cap Diameter:9 mm / 0.35 inch; Tolerance:20 degrees celsius±0.05ml; Packing List:2Pcs X Volumetric Flask BulletPoint2 : Advantage: The volumetric flask and the stopper are made of low expansion coefficient thickened borosilicate glass which can resist high and low temperatures and has superior chemical durability; The bottle mouth has a glass stopper to reduce evaporation and prevent liquid leakage. The long neck shape is convenient for holding and shaking to mix liquid; The transparent bottle body and accurate white graduation line ensure the accuracy of your experiments. BulletPoint3 : Instruction: When pouring liquid, use a glass rod to slowly transfer the solution, when the liquid is close to the scale line, you can use a dropper to drip slowly until the liquid concave surface reaches the scale line, tighten the stopper of the bottle and shake moderately to mix the liquid evenly BulletPoint4 : Application: Suitable for various occasions, the flask is suitable for a variety of occasions, such as laboratories, chemical rooms, and so on. BulletPoint5 : Note: Please use with care to avoid damage; When mixing liquids, make sure the cap is tightly closed; When you finish using the volumetric flask, please remember to clean it and ensure it is dry after cleaning. Capacity : 1000 milliliters Color : CLEAR ExternallyAssignedProductIdentifier1 : 762047824901 ExternallyAssignedProductIdentifier2 : 0762047824901 ItemName : 1000ml Volumetric Flask, 3.3 Boro Glass, Class A, Ground Stopper, Karter Scientific 213W8 (Pack of 2) ItemPackageDimensions_Height : 7 inches ItemPackageDimensions_Length : 14 inches ItemPackageDimensions_Width : 7.5 inches ItemPackageQuantity : 2 ItemTypeKeyword : volumetric-flasks Manufacturer : Karter Scientific Material : Glass ModelNumber : CH0441E NumberOfItems : 2 PartNumber : 213W8 ProductDescription : Karter Scientific Class A Volumetric Flasks are manufactured from high quality inert 3.3 borosilicate glass and meet the tolerances requirements as established by ASTM E-694 - ASTM E-542 - and ASTM E-288. Flat bottom. Volumetric flasks provide improved lab convenience, broad selection and precise volume measurement. Accuracy limits conforms to ISO 1042 Laboratory Glassware-One mark volumetric flasks. With one permanent circular mark. Printed with fused-on enamel color, resistant to most acid and alkaline solutions. Calibration is based on the poured in volume ("In") at a +20°C reference temperature. ProductSiteLaunchDate : 2021-04-06T18:04:30.865Z Size : 1000ml SpecificationMet : Astm SpecificationMet1 : Iso SpecificationMet2 : Astm Style : Pack of 2 SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredDgHzRegulation1 : not_applicable SupplierDeclaredDgHzRegulation2 : not_applicable SupplierDeclaredDgHzRegulation3 : not_applicable SupplierDeclaredDgHzRegulation4 : not_applicable SupplierDeclaredDgHzRegulation5 : not_applicable