The cover glass often has several other functions. It holds the specimen in place (either by the weight of the cover slip or, in the case of a wet mount, by surface tension) and protects the specimen from dust and accidental contact. It protects the microscope's objective lens from contacting the specimen and vice-versa; In oil immersion microscopy or water immersion microscopy the cover slip prevents contact between the immersion liquid and the specimen. The cover slip can be glued to the slide so as to seal off the specimen, retarding dehydration and oxidation of the specimen. Microbial and cell cultures can be grown directly on the cover slip before it is placed on the slide, and specimens may be permanently mounted on the slip instead
Glass thickness: 0.13mm-0.16mm, 0.16mm-0.19mm, 0.19mm--0.23mm Cover Glass Circles: 8mm, 9mm, 10mm, 11mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm Our Cover Glass are manufactured from normal glass or super white glass.