MATERIAL composed of high-quality optical glass PACKAGE 50 glass slides with polished edges 100 cover glasses and 4 plastic droppers SIZE Microscope Slide(L * W): 25.4 mm/1''x76.2 mm/3'',Thickness: 1 mm/x1.2 mm; Cover Glass(L * W): 20 mmx20 mm,Thickness:0.13 mmx0.17 mm; Plastic Dropper Capacity: 1ml x 2 pcs,2ml x 2 pcs STEP When preparing a sample, place the cell or tissue section on a glass slide and place a cover glass on it for observation CLEANING METHOD Wash with water or alcohol, and then wipe clean with cotton or gauze (better use lens cleaning paper, and avoid touching the glass slide with your fingers, so as not to leave fingerprints on it and affect the use of the next observation) ADVANTAGE Microscope slides and coverslips have no sharp edges, they are neat and do not hurt your hands, and children also can use them safely One side of the slide is frosted glass to prevent fingerprints when picking it up