Sutter DG4 lamp life expectancy

[Brenton Cavanagh]

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Hi All,

This might be a bit of a blast from the past, but I'm curious how often others change/changed their Sutter DG4 lamps (Ceremax PE175BF).

The recommended end of life on the spec sheet is 1000 hr, which is define by the lamp reaching 50% of peak brightness.  I inherited a system that had been running for 3000+ hours with no issue.  Does the lamp ever actually cut out or are these lamps invincible?

From the little I have found on the lifespan of these lamps. It appears to have a constant decline in intensity from the first ignition until it plateaus at 50% brightness for up to 7000+ hours.  http://www.excelitas.com/Downloads/Cermax_Eng_Guide.pdf

Very interested in the experience/advice that others have had and if they follow the recommended life time or another regime.

Note: this lamp is used for long term live cell system where high intensity is not of high importance, more lamp life length and stability.

Thanks
Brenton

[Glenn Merrill-Skoloff]

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Hi,

I took a standardized image every two weeks. For this I used a bead slides I had made fresh and took 3 fields of at least five beads each and signal averaged to get the total fluorescence of one bead. I would graph this and post the graph on the wall. The lamps have a burn-in time of 10 or so hours, then they would settle down and stay consistent for several months, then start to tail off. I changed lamps when the standard signal was down by 30%. I wish I could tell you how many hours this was but it has been awhile and I can't located the old graphs.

-  Glenn

Glenn Merrill-Skoloff
Laboratory Manager
Director, Intravital Microscopy Core

Beth Israel Deaconess Medical Center
Division of Hemostasis and Thrombosis
3 Blackfan Circle - CLS 942
[phone]
[hidden email]

From: Confocal Microscopy List <[hidden email]<mailto:[hidden email]>> on behalf of Brenton Cavanagh <[hidden email]<mailto:[hidden email]>>
Reply-To: Confocal Microscopy List <[hidden email]<mailto:[hidden email]>>
Date: Wednesday, June 13, 2018 at 12:39 PM
To: "[hidden email]<mailto:[hidden email]>" <[hidden email]<mailto:[hidden email]>>
Subject: [External] Sutter DG4 lamp life expectancy

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Hi All,

This might be a bit of a blast from the past, but I'm curious how often others change/changed their Sutter DG4 lamps (Ceremax PE175BF).

The recommended end of life on the spec sheet is 1000 hr, which is define by the lamp reaching 50% of peak brightness.  I inherited a system that had been running for 3000+ hours with no issue.  Does the lamp ever actually cut out or are these lamps invincible?

From the little I have found on the lifespan of these lamps. It appears to have a constant decline in intensity from the first ignition until it plateaus at 50% brightness for up to 7000+ hours.  https://urldefense.proofpoint.com/v2/url?u=http-3A__www.excelitas.com_Downloads_Cermax-5FEng-5FGuide.pdf&d=DwIFaQ&c=WknmpdNpvrlj2B5K1aWVqL1SOiF30547pqSuOmtwXTQ&r=42NmABDnL7YbxR4oFPmDN-5XK3Kw7RY6XnrLkSD93J4&m=AFjJQHRICehRHnNhjNqA3qid6pPjibQngwWKmX_tRpg&s=mUWS8XRP_G29K1w9VNoOJ8ve9I5jboNSFoXM6tKAauM&e=

Very interested in the experience/advice that others have had and if they follow the recommended life time or another regime.

Note: this lamp is used for long term live cell system where high intensity is not of high importance, more lamp life length and stability.

Thanks
Brenton


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