http://www.alfinemed.com/histology-consumables/ Overview Alfine Professional Grade Microscope Cover Glass are made of high quality glass, non-fogging, non-sticking and no bubbles, scratches or striations, and designed with ideal optical properties, stable molecular structure, and uniform flatness. Application These coverslips can support routine applications in cytology, histology, microbiology, urinalysis, and more. They keep specimens flat, hold them in place, and protect them from dust and contact with the microscope lens.Customized Histology Consumables website:http://www.alfinemed.com/histology-consumables/