Made of chemically resistant borosilicate glass, this high quality German coverglass has a superior optical quality. The state of the art machining process ensures that the edges are cut with high precision, which makes this coverglass especially suitable for automatic coverslipping machines. Custom-specific cover glasses (Art.No. 010122381). 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