> I tried looking for it, but can't find it at present; this chap had
erratic
> readings after a while, so wrote to the manufacurer, and was told not to
do
> it. Who makes your sensor? You might try emailing them, as I gather there
> are at least two types of sensors out there, and they may require
different
> storage conditions.

Thanks anyway.  You've created the question, I'll do some research to see if
I can answer it.  My analyzer is a UBS O2 stick.  I'm not sure who makes the
sensor.  It's internal.

Lee