Specification Brand : QuafooLAB BulletPoint1 : 80mm diameter Lab Watch Glasses/beaker cover BulletPoint2 : 10PCS/Pack Beaker Lid , 8 different sizes which are great for various uses. BulletPoint3 : Lab Watch Glasses has strong durability and corrosion resistance. High transparency, easy to observe experimental results. BulletPoint4 : Use to covered on evaporating dish or beaker to dust from falling into and also can used as a lid for other chemical containers. BulletPoint5 : Notice: This Watch Glass cannot be heated directly with fire to prevent rupture or be used as an evaporation dish. Note that the watch glass is selected according to the caliber of the instrument. Generally, the diameter of the watch glass should be larger than the diameter of the instrument by 1cm, which is more convenient to use ItemName : Watch Glass Beaker Cover Set 10PCS 80mm High Temperature Resistant Cover Lids for Scientific Laboratory Watch Glass Equipment ItemPackageDimensions_Height : 1 inches ItemPackageDimensions_Length : 3 inches ItemPackageDimensions_Width : 3 inches ItemPackageQuantity : 4 ItemTypeKeyword : science-lab-watch-glasses Manufacturer : QuafooLAB Material : Glass NumberOfBoxes : 1 NumberOfItems : 1 PartNumber : BL0000012 ProductDescription : Watch Glass Beaker Cover Set 10PCS 80mm High Temperature Resistant Cover Lids for Scientific Laboratory Watch Glass Equipment ProductSiteLaunchDate : 2024-07-02T05:59:38.707Z Size : 80mm SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 1 UnspscCode : 41000000