... ISO 2.no bubble,no scrape,clear. 3.All kinds of slides 4.OEM is available 7101 ----ground edges, 1"x3 ... box 72pcsx50boxes/ctn, 44x20x16, 42x29x11, 20kg, paper box Chemical Composition of normal glass: Silicon DioxideSiO272.00%Sodium OxideNa2O14.50%Potassium OxideK2O0 ... kg/m3Special glass material, with special composition is also available. Microscope Slide