PIRA: 6A40.00 

Lab Equipment

  • Bottle with eye dropper
  • 2 test tubes with glass stirring rods
  • microscope immersion oil (type A)

Directions 

  1. Squeeze eye dropper and release. The eye dropper becomes invisible.
  2. Look at the stirring rod ends that are immersed in the liquid and notice that they are also invisible.