Hand Sanitizer, and a Discrepant Event

Have you been making homemade hand sanitizer with isopropyl alcohol and aloe gel?  Before you mix up a batch of hand sanitizer, try this discrepant event.  Measure equal amounts of isopropyl or rubbing alcohol into separate containers.  Now combine the two and remeasure them together.  There is less total volume.  Now try In Between, a TOPS lab with salt and rice.  The molecules slip between each other and occupy less volume.  Cool right?