Leak Test Apparatus is a solid state instrument design for the leakage testing of food, drug and other industrial chemical products. The instrument is used to test the quality of packing process in strips, blisters and sachets containing tablets, granulates and liquids. They are also used to check that the seals enclosing the product are perfectly intact. The unit contains the polycarbonate, desiccator housing to sustain the working for long time. Test samples to be analyzed are placed into the polycarbonate desiccator housing. The vacuum generated is held for a pre-set time, and then released. The test sample being analyzed should retain their shape during this test, indicating the sealing is correct. Secondly, the strip/bottle under test are immersed in a colored dye solution (Normally methylene blue). The venting of the desiccator will allow any holes to be penetrated by the dye and the contents of the flexible packaging will also be stained with the same coloring material.