Heathrow Scientific HD15996C White Cork Lined 50 Place Microscope Slide Box, 8.3" Length x 3.38" Width x 1.25" Height

preparing onion microscope slides you will need the following material a microscope a microscope camera microscope slides a kitchen knife toothpicks pipettes coverslips iodine tincture an onion and a cutting board preparing the slides first wash and peel the onion then slice the onion as thin as possible I found that using thin layer of skin around the onion worked best clean your microscope slide with an alcohol wipe do the same with a coverslip place your pieces of onion onto the slide and reposition them with a toothpick a drop of iodine onto the onion drop on the coverslip apply pressure to the coverslip but not enough to break it now your slide is complete now observe under a microscope you will be able to see the cell wall and the nuclei of the onion cells you The Onion's rigid cell walls allow the cells to be viewed under a microscope and the iodine dye is the nucleus red allowin