Which solution is used in leak test?

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Solutions change depending on the technique and application in leak testing. For cost-effective pressure decay tests&#x2014;which produce measurable results&#x2014;air and nitrogen are common choices. Submersion tests use water applied in which the test object is submerged to visually detect leaks through bubbles. Because of its small molecular size, which qualifies for the detection of very minute leaks, helium is extensively employed for precise leak detection. Apart from these gases, certain treatments like soap or detergent are used to increase the visibility of leaks in bubble testing. Chemical trace methods can also be applied, whereby a chemical reacts with the departing gases to identify leaks. While gas sniffing uses sensors to find system leaking gases, ultrasonic testing uses sound waves to find significant leaks. The degree of sensitivity and the nature of the test item help to choose the solutions such that products are of quality and safe for usage in several sectors.

Q. Which solution is used in leak test?

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