A vacuum leak test is a non-destructive quality control procedure used to identify and locate leaks in sealed packages or containers. The test involves placing the packaged item inside a sealed chamber and evacuating the air to create a vacuum. If a leak is present, air or gas will escape from the package into the chamber. This is detected either by a pressure rise in the evacuated chamber in the Vacuum Decay method setup, or by observing bubbles escaping from the package while submerged in a water bath in the Bubble Emission method setup. This method is essential for verifying the seal integrity of packaging, ensuring it protects the contents from environmental factors. The reliability of this test depends on the use of calibrated precision test instruments to apply and monitor the vacuum level accurately. It is widely applied in industries like food, pharmaceuticals, and medical devices to prevent contamination and preserve product shelf life.

Volatile Corrosion Inhibition (VCI) has found its wild application, and has completely promoted metal antirust from grease. Now, in the field for high quality rust-proof applications, including military, precision machinery, ironware, measuring and blade wares, electric and electronic applications, machinery processing, storage and voyage as well as high requirements for export goods, VCI packages have [...]

VCI (Volatile Corrosion Inhibition) packages, owing to strict requirements, its seal performance testing is quite important. Seal performance is defined as the characteristic of avoiding alien substance entering into or contents coming out of the package. Usual testing methods are as follows: 1. Underwater Decompression Method: Labthink PARAM MFY-01 Leak Tester is on underwater decompression [...]