I am halfway through a pack of 10 of these titrets and I haven't had
one work at all the way the instructions indicate. I understand the
broken off bulb tip is suppose to make some sort of squeeze valve, but
nothing ever flows up the hard plastic sample tube.

The basic problem is one of flow. I can never get wine to flow into
the ampoule. I have also seen the pictures at
<http://www.chemetrics.com/titrets.html>. No help there.


Suggestions? I am not using the titretor and was told by several wine
friends that it is unnecessary.