Dears,
I am afraid that the "vacuum leak test" as described here will be
only appropriate for important leaks. The same for the "pressure
test" which consist in firmly pressing the bottles (mechanically or
by hand) and to inspect them for trace of liquid.
When it comes to microleaks, and because the plasticity of the
material of BFS/FFS bottles (PE or PP), the chances of detecting a
failing bottle by "emptying" it are not optimized. Detection of leak
with measurement of gas (air or helium) entry/output is much more
effective but also much more expensive. You also have the detection
of microleaks through the perturbation of a electro-magnetic filed
where the container is placed (the method was first developped by
Nikkai Densok but you can noiw find other constructors).
JDM
2
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