Leakage and sealing strength tester is a professional equipment used to test the sealing performance of plastic packaging containers, mainly applied in packaging, food, pharmaceutical, medical and other industries. This instrument adopts the principle of negative pressure or positive pressure testing, and evaluates the sealing strength and leakage situation by detecting changes in air pressure. Its functions include sealing strength testing, heat sealing quality testing, and whole bag burst pressure measurement, which can quantitatively analyze the sealing performance of packaging.