32 thoughts on â10 Greatest Empires in the History of Worldâ. 1  For some reason I feel like I need to disagree that the U.S. is not an empire. In terms of this list youâre correct (ie geographic conquests) but the U.S. asserts an authority over the rest of the world at present that has never existed before.
How to Safely Clean Your Ears. Normally, ear canals are self-cleaning and should not need to be cleared with any foreign devices. Trying to clean the ear with cotton swabs or other objects can actually cause problems by pushing the ear wax deeper into the ear canal.
Another effective way to clean your instruments is to use an ultrasonic cleaner. Both the EC-1000 and IC-1000 are safe to use during ultrasonic cleaning sessions. It is critical to the operation and long life of a surgical instrument to finish the cleaning by applying Roboz IL-1000 Surgical Instrument Lubricant.