Microscope special cover Glass It is generally used in cooperation with a microscope slide. Good replacements and articles for school laboratory. Size: 22x22mm, thickness 0.13-0.17mm Material: Glass Color: Transparent Quantity: 400pcs / small box Purpose: Making collection microscope observation of specimens 1, Making the object under observation forming a thin film, easy to transmit light, easy to observe; 2, Make the specimen is relatively fixed; 3, Facilitate to use capillary phenomenon, to make add all kinds of reagents(Dye, acid, salt solution) forming a gradient; 4, To avoid sample contamination. Package include: 400 pcs 22*22mm Microscope Cover Glass Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.