Made of high quality soda-lime glass, these microscope slides are plain, with ground edges and 90 degree corners. Ideal for use in the diagnosis and investigation of all types of specimens, slides have undergone an automatic cleaning process, which makes them ready for use upon arrival. Slides are supplied 72 per box. Karter Scientific is a registered trademark in United States of America. To maintain quality control, authorized permission is required in the resale of our products.