Feb 15, 2014 at 06:32 PM Author: jercar954
These are probably halophosphor lamps.

Preheat and T-12 fluorescents forever! Down with LED's and instant start T-8 fluorescents.

Feb 15, 2014 at 07:08 PM Author: TheUniversalDave1
What does Halophosphor mean?

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Feb 15, 2014 at 07:29 PM Author: Larry
I always liked the date, but I never seen one that was marked. I never did, when the quit they quit.

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Feb 15, 2014 at 07:38 PM Author: jercar954
Halophosphor or more specifically calcium halophosphate was the base phosphor used in white (i.e. cool white, warm white daylight lamps etc) from when beryllium was banned in 1949 until present. Since the 80's, used has been reduced in favor of more efficient phosphors mixes which improved CRI, spectral distribution and lumen output.

Preheat and T-12 fluorescents forever! Down with LED's and instant start T-8 fluorescents.

May 20, 2014 at 09:19 PM Author: TheUniversalDave1
I compared these side-by-side with newer nineties Supersavers, and what I saw was that this lamp has a WAY better color, and is WAY brighter. Then, I compared them to a late eighties Sylvania F40/CW, and the light output was almost identical. Why would they change the lamp to have a yuckier color and be dimmer? These have so much mercury, you can see a ton of it burn off after a few minutes.

"If people only knew how much I secretly hated them, they'd love me for holding it in." -Matt Groening

Aug 01, 2014 at 12:29 PM Author: TheUniversalDave1
Does anyone know how many lumens these lamps are? And what about the SuperSaver II Lite White version?

"If people only knew how much I secretly hated them, they'd love me for holding it in." -Matt Groening

Aug 01, 2014 at 02:52 PM Author: themaritimegirl
All you have to do is Google the ordering codes and you'll find that info. CW is 2279, LW is 2430.

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Aug 01, 2014 at 03:02 PM Author: TheUniversalDave1
Ah, what page did you get that information from? I Googled F40/CW/RS/SS and all I got was websites trying to sell me stuff.

"If people only knew how much I secretly hated them, they'd love me for holding it in." -Matt Groening

Aug 01, 2014 at 03:10 PM Author: themaritimegirl
You need to google the current ordering codes. I googled "sylvania f34cw/ss" and found this: https://www.1000bulbs.com/product/6347/F-40T12CWESS.html Then I googled "sylvania f34lw/ss" and found this: http://www.goodmart.com/products/sylvania-f34lw-ss-eco-f40lw-ss-eco-24566.htm (click Specifications) Then I found this awesome Sylvania lamp catalog which confirms the information from the two above sites: http://assets.sylvania.com/assets/documents/Fluorescent.f42c8991-c4fa-47ac-9d3b-ed8c8c1d742c.pdf

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Aug 01, 2014 at 03:17 PM Author: TheUniversalDave1
That catalog is an excellent resource. I added it to favorites.

"If people only knew how much I secretly hated them, they'd love me for holding it in." -Matt Groening