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so how much does the temperature rise when it is time to change the bulb? 
(and is this a 50W or 100W)? thanks.


At 06:57 AM 05/23/06, you wrote:
>Search the CONFOCAL archive at
>http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal
>
>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.
>
>Jill Pflugheber
>Microscopy Technician
>St. Lawrence University
>Canton, NY
>
>carl wrote:
>>Search the CONFOCAL archive at
>>http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal
>>
>>An indication that the bulb is old is that it may quit during a 
>>session.  If it is allowed to cool, it restarts and works for a while, 
>>then quits again. Another is that fluorescence from a specimen is dimmer 
>>than expected.  This is from the dark deposit that builds up on the inner 
>>surface of the bulb. Only had one blow up and it put a small scar on the 
>>mirror in the housing. Scared the you-know-what out of the user.
>>
>>Interesting to learn (why didn't I think of that?) that more power 
>>required to span a larger gap corresponds with higher temps and increased 
>>chances of a blown bulb.  Something to keep in mind when trying to 
>>stretch the life of a bulb.
>>Carl
>>
>>Carl A. Boswell, Ph.D.
>>Molecular and Cellular Biology
>>University of Arizona
>>520-954-7053
>>FAX 520-621-3709
>>----- Original Message ----- From: "David Chambers" <[log in to unmask]>
>>To: <[log in to unmask]>
>>Sent: Monday, May 22, 2006 5:01 PM
>>Subject: Re: Hg Bulbs Failure Warning Sign
>>
>>
>>>Search the CONFOCAL archive at
>>>http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal
>>>
>>>Ignatius, Mike wrote:
>>>>nerves to settle.  Sooooo, I learned, if you smell electrical burning
>>>>(plastic insulation usually?), best to shut off the lamp, then look.
>>>If folks do this, it's probably best to wait for the lamp to cool 30 
>>>minutes first
>>>- never open the housing when the lamp is hot, for fear that it may 
>>>explode in
>>>your face - aargh!
>>>
>>>- David "scaredycat" Chambers
>>
>>Thomas E. Phillips, PhD
>>Professor of Biological Sciences
>>Director, Molecular Cytology Core
>>2 Tucker Hall
>>University of Missouri
>>Columbia, MO 65211-7400
>>
>>573-882-4712 (office)
>>573-882-0123 (fax)
>>[log in to unmask]
>>