High quality preimium coverglass. #1 thickness. 24X50 20 oz/cs. Made from pure white borosilicate glass, StatLab’s high-quality coverglass is especially well-suited for use in automatic coverslippers. These cover glasses are packed in plastic box with a hinged lid. Each of these plastic boxes contains 2 ounces. One ounce of cover glasses 24x50 mm, thickness no. 1 equals 65-70 pieces of glass. This means that this box with 2 ounces contains 130-140 pieces. 20oz/Case = 2 ounces per box, 10 boxes per case