Leak tester is often referred to as vacuum/negative pressure method, or bubble emission method，which is used as gross leak checking for flexible packages(with headspace gas) by eye observation.

Leak tester is often referred to as vacuum/negative pressure method, or bubble emission method，which is used as gross leak checking for flexible packages(with headspace gas) by eye observation.

GEATURES

Leak tester is often referred to as vacuum/negative pressure method, or bubble emission method，which is used as gross leak checking for flexible packages(with headspace gas) by eye observation.