Easy fix: How do you know if your ultrasonic cleaning unit in the office is still working properly?
Does the office buy one and expect it to work perfectly for 10-15 years? How does one find out if it is still working? Just because the solution is moving a little does not mean it is functioning to full capacity. Here is a very simple tip to find out if the ultrasonic is still at optimum efficiency.
After thoroughly cleaning and rinsing, fill the unit with water. Take a 6" by 6" piece of aluminum foil and place in the ultrasonic unit. Place the lid and set the timer for 5 minutes. When the cycle is finished remove the foil and look at it. The foil should be very pitted from the ultrasonic waves. If not, it is time to replace the unit.