Leakage testing
Leakage of gas through the valve causes the aerosol to quickly lose its performance. When using LPG as propellant, this also creates a hazardous situation. Testing can pressure after production will only capture significant leakage so another test is required. The device used is also referred to as a "sniffer" as the device detects propellant gas traces in the air around the can.
Measuring concept
A sniffer is a device designed to detect and measure the presence of specific gasses or vapors, typically used to identify leaks. The sniffer employs sensors or probes that can recognize and quantify the concentration of targeted gases, providing a reliable method for quality control in aerosol manufacturing.
Using a sniffer in aerosol testing offers an in-line, non-destructive, and simple option to detect leakage due to poor valve crimping. It does not offer an alternative to structural can-defects typically tested in a water bath.
Sniffer leakage testing is considered an alternative for the water bath regulatory requirements when combined with testing the can before filling. This is sometimes done by can- and valve-suppliers offering quality certification. In some cases, combining sniffing with gas-pressure testing makes sense as well.
Sniffer integration
Leakage detection is one of the tests that can be integrated in our production lines and is an optional extra for our gas pressure testing unit.
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