Hi All,  Okay, here's my dilemma.  While all of the pouch sealants
that I've tested work better at just 5" of vacuum than what would
ever be required under normal operating circumstances, there are
differences.

The main problem I've encountered revolves around creating a "fair
test".  I've concluded that for the testing to be fair, I must keep
applying each sealant until each pouch achieves the same leakage rate
as the pouch with the lowest leakage rate after just one application
of the sealant.

Without going into great detail, I think you'll get the point.  If
pouch 'A' has a leakage rate of 2.4 bubbles per second after one
application of sealant, can further testing be 'fair' if pouch 'B'
has a leakage rate of 9 bubbles per second after one application of
sealant?

While it might seem obvious that sealant 'A' did a better job of
sealing the leather than sealant 'B', your thinking might change if
you also discovered that sealant 'A' caused the pouch to become two
times stiffer than sealant 'B'.  So, if I'm comparing apples to apples,
wouldn't it be more fair to seal all of the pouches to the point where
their leakage rates are identical?  What's your opinion?

Musically,

John A Tuttle
Player-Care.com
Brick, New Jersey, USA