The modern world is dependent on vacuum. From its humble beginnings several centuries ago, there are now few parts of our technologically-driven existence and well-being that are not impacted, better, perfected or made possible by vacuums.

From freeze-dried and vacuum-packed foods, refrigerators and air-conditioning, placing micro coatings on surgical instruments to exploring the hidden secrets of physics and outer-space, these and hundreds of other applications are only possible through the much-unappreciated but hugely important vacuum. You  can also know more details related to where vacuum is used and how it is used for leak testing, by clicking here.

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As man continues to push the boundaries of technology, scientific discovery and applicability, the shift towards lower-pressure vacuums (i.e. The current and future applications have been multiplied by the advent of ultra- and extreme vacuum ranges.

It is a paradox that each vacuum system has its own level of "tightness". No vacuum system is truly leak-free. Different vacuum processes and applications require different leak rate requirements. What is acceptable at lower vacuum levels would be unacceptable at higher vacuum levels. Vacuums have many fascinating and diverse functions. They can detect, evaluate, measure, and even evaluate leaks.

A leak is an opening in a system that allows gas to escape or enter uncontrollably. The leak rate is affected by several factors, including the size of the hole or holes; the gas type; as well as the pressure differential (between outside and inside the system).

It is difficult to detect leaks in vacuum and pressurised systems. However, it is important and often dismissed as trivial.