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Jill Pflugheber wrote:

> We use a digital thermometer to keep track of the temperature at the 
> housing vents.  If the temp rises above "normal" working temp, we figure 
> it's time to replace the bulb.

Interesting idea.  I'll bet even an old-style glass thermometer might do 
the trick, if we can remember to take a look at it!

Thanks--

Martin Wessendorf

-- 
Martin Wessendorf, Ph.D.                   office: (612) 626-0145
Assoc Prof, Dept Neuroscience                 lab: (612) 624-2991
University of Minnesota             Preferred FAX: (612) 624-8118
6-145 Jackson Hall, 321 Church St. SE    Dept Fax: (612) 626-5009
Minneapolis, MN  55455                E-mail: [log in to unmask]