Over the weekend I received an email from a customer asking about seal quality testing. You can do a lot for your quality control process with our cap inspction system
and ensuring you have applied adequate application torque to the closure.
However, you can take it to another level. Liquid products lend themselves well to testing systems from the likes of Teledyne Tap Tone
and others. In my search to find some statistical analysis of seal quality, I came across this paper
which talks in great detail about ways to test seal quality.