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I've always used Ushio 102DH, which consistently last 200 hours, and recently am trying 103's which have lasted 300 hours.
We turn them on for anywhere between 1hr-8hrs/day, but usually keep them on once ignited. (so they aren't switched on and off all day)
I've used this brand for years on Zeiss's equipment with no trouble at all, we are just careful abt turning them on and off. I am not sure how much the individual manufacturer's power supplies and housing differ as far bulb-life extension is concerned.
Melissa
Melissa Gonzalez
R&D Cell Genesys
South San Francisco, CA 94080
-----Original Message-----
From: Confocal Microscopy List [mailto:[log in to unmask]]On Behalf Of carl
Sent: Friday, May 19, 2006 3:13 PM
To: [log in to unmask]
Subject: Re: Hg Bulbs
Search the CONFOCAL archive at http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal
Hi all,
Interesting topic. I also have trouble making the "200 hr" last. Mostly they last about 15-160 hrs. These are Ushio 102DH bulbs using Nikon's power supply and lamp housing. This current bulb is the first that has made it past 200hr in about 20 bulbs. There are some short time users, but for the most part the bulbs are on 1-4 hr per session. Pretty disappointing. Is this to be expected?
Thanks,
Carl
Carl A. Boswell, Ph.D.
Molecular and Cellular Biology
University of Arizona
520-954-7053
FAX 520-621-3709
----- Original Message -----
From: Kathy <mailto:[log in to unmask]> Spencer
To: [log in to unmask]
Sent: Friday, May 19, 2006 2:25 PM
Subject: Re: Hg Bulbs
Search the CONFOCAL archive at http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal Hello All;
I have another question about mercury short arc lamps. I've been having problems with my Osram 100W/2 lamps. They don't seem to last to their 200 hour lifetime (averaging around 100 hours). When they fail to ignite, I have tried them in other power supplies, and they still will not ignite. A new bulb in the old power supply is fine. The microscope manufacturer is confident the power supply is not at fault. This has been going on for about 1 year (I use around 50 bulbs/year). I'm having discussions with my bulb vendor now.
Is there a difference between Osram and Ushio 100W bulbs? I thought I would try the other manufacturer, to see if the bulbs will last longer. I'm tempted to try the OM103 bulbs, just because they last longer, and the price was about the same. I only saw one reply to Claire's question... are other users happy with these?
Thanks!
Kathy
At 02:24 PM 5/18/2006, you wrote:
Search the CONFOCAL archive at http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal Not all scopes can use the 300 hour bulb. One that we have kept blacking out during use of a 300 hour bulb (I assume that it overheated), but is fine with a 200 hour bulb. Check with the scope manufacturer.
We have a very good source for bulbs--Bulbtronics.com. They have good prices and fast service. Does anyone else use this company?
Elaine
At 01:56 PM 5/18/2006, you wrote:
Search the CONFOCAL archive at http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal
We have two groups using 100 W mercury lamps. One uses HBO OM100 bulbs and the other OM103.
Is there much of a difference here? Is there reason to choose one over the other? I don't want to have many different types of bulbs in stock if I don't have to so I would appreciate any suggestions.
Claire
Kathy Spencer, Ph.D.
Scientific Associate
The Scripps Research Institute
10550 N. Torrey Pines Road
ICND 210
La Jolla, CA 92037
858-784-8437
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