Specification Brand : Corning BulletPoint1 : Diameter: 150mm approx BulletPoint2 : Reusable BulletPoint3 : Heavy Duty Rim BulletPoint4 : Instruction: 1. Before use, the watch glass needs to be cleaned and dried to effectively ensure the accuracy of experimental results. 2. Clean and dry the watch glass promptly after use to avoid the residue of experimental substances and affect use. BulletPoint5 : NOTE: 1. The watch glass cannot be heated directly by fire. 2. Please check the size before purchasing. Select the watch glass of the corresponding size according to the diameter of the instrument. It is recommended to choose a watch glass that is 1cm larger than the diameter of the instrument for easier use. Color : As Shown Department : unisex-adult ItemName : Corning Pyrex #9985-150, 150mm Diameter Plain Watch Glass/Beaker Cover (Single) ItemPackageDimensions_Height : 20.7 centimeters ItemPackageDimensions_Length : 11.7 centimeters ItemPackageDimensions_Width : 16.3 centimeters ItemPackageQuantity : 4 ItemShape : Round ItemTypeKeyword : science-lab-watch-glasses Manufacturer : Karter Scientific Material : Borosilicate Glass ModelNumber : 3005924VH0 NumberOfItems : 1 PartNumber : 9985-150(single) ProductDescription : These 150mm diameter PYREX watch glasses are designed to fit 2L PYREX beakers. They possess high chemical durability, thus preventing contamination of solutions. They are molded to the same radius of curvature for convenient stacking. The heavy wall and uniform fire-polished edge provide mechanical strength. The outside diameter cannot be controlled within close limits and a slight degree of out-of-round can be expected to occur. ProductSiteLaunchDate : 2024-04-11T08:01:38.981Z Size : 90mm Style : centimeter SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 4 UnspscCode : 54111501 WatchMovementType : Japanese Quartz WaterResistanceDepth : 100 meters