Have students perform a microscopic preparation and observe mitotic figures from onion epidermis.

Composition:

• 1 dropper flask of 10ml of a sample preparation solution
  
• 1 dropper flask of 10ml of sample staining solution
  
• 1 dropper flask of 10ml of a solution for observation of the sample
  Educational and technical instructions available on our website.
  
  Conservation: 6 months at room temperature
  Number of pairs of students: 20
  Necessary material:
  
• Onion, garlic or shallot
  
• Beaker
  
• Watch glass
  
• Blade, cover slip
  
• Magnification microscope x 10, x 40
  
• Scalpels
  
• Scissors
  
• Fine forceps