Vacuum Test and Leak testing is a critical part of the manufacturing process. Leaks in products can cause a variety of problems, from loss of vacuum to contamination. This is why it's important to perform Vacuum Test for leaks before the product goes into operation. Thus, the vacuum leak tester is the efficient way to perform the vacuum leak detection test. Presto Vacuum Leak Tester Model PVL - 0132 - Prima - 300 mm is one of the most useful testing instruments that are designed.