With the aid of a vacuum inside the bottle and a pressure gauge, a Vacuum Leak Tester For Empty Bottles can find leaks in bottles. The tester frequently includes a vacuum pump, a gauge to gauge pressure, and a connector or hose that connects to the bottle. In order to remove the air from the bottle, it is sealed, and the vacuum pump is turned on. The gauge will then display a decrease in pressure, which will indicate if there is a leak in the bottle. In order to make sure that bottles are properly sealed and do not leak before they are filled with product, this test is frequently used in the bottling industry.