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Philips TL RS 20W

Philips TL RS 20W

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I was just having a quick look in Homebase at their rather small range of fluorescent tubes and was quite surprised to see they had loads of 20W 2ft T12 tubes in two brands and no T8s. Every other tube was T8 and usually T12s are scarcely found in most DIY/Home stores now.

I thought both the packaging and the tube look rather nice, the end caps are well made, the ends of the pins are smooth and the glass has a very glossy look and feel. I was also surprised to see this is an American made lamp with 'RS' on it which stands for rapid start. The packaging says white yet this is colour 33 which is normally called cool white.

I tested the lamp in my DIY under shelf light with quick start ballast, there was a delay and buzz before it started and sure enough it was cool white and not white, I also noticed that there seemed to be a lot of condensed mercury inside which quickly evaporated to leave tube tube looking clean with no bumps or grainy bits in the phosphor. This tube also has a 10000 hour life instead of 9000 hours which is normally quoted for most T12s and standard T8s.

DSCF1771.JPG DSCF1617.JPG PHILIPS_TL_RS_20W.jpg Slide1.JPG

Light Information

Light Information

Manufacturer:Philips
Model Reference:TL RS 20W
Lamp
Service Life:10000 Hours
Electrical
Wattage:20W
Optical
Lumen Output:1180
Color Temperature:4000K
Color Rendering Index:62
Physical/Production
Fabrication Date:2009?

File information

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Filename:PHILIPS_TL_RS_20W.jpg
Album name:SuperSix / Fluorescent Lamps
Keywords:Lamps
File Size:58 KB
Date added:Aug 13, 2010
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DieselNut
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jonathon.graves johng917 GeorgiaJohn
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Aug 13, 2010 at 11:42 AM Author: DieselNut
Does the "640" mean it is a 60 something CRI and 4000K lamp? That is the way many of the USA lamps are coded. I have some 841s and 865s. Also, some USA made lamps have the "/33" (or other number) to indicate the length in inches, of non standard length lamps, such as appliance lamps.

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Luminaire
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Aug 13, 2010 at 12:13 PM Author: Luminaire
It's not a notation we see here, but yes, thats correct.

640 is probably just traditional F20T12/CW/33 for appliances.

they call CW 4000K in EU, we call it 4100K I don't why
SuperSix
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ATL P42STUFF supersix94
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Aug 13, 2010 at 12:22 PM Author: SuperSix
@DieselNut

As far as I know the "640" means CRI in 60s and 4000K, this isn't normally normally used on halophosphate lamps where I am and seems to be based on the triphosphor numbering system.

The colours normally have numbers here for example 33 = cool white 4000K and 35= white 3500K, some of the numbers seem to be random to me and I'm not sure how 33 comes from 4000K!?

The F??T?? like F40T12 was never used here until the last couple of decades. Before that we used different nomenclature based on the British mercury vapour nomenclature for example MCF means a tube using Mercury for the discharge (the M) under low pressure (The C) and fluorescent coated (the F). Also there's usually a letter after MCF for example MCFE which means it has an external silicone coating.

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DieselNut
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jonathon.graves johng917 GeorgiaJohn
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Aug 13, 2010 at 12:40 PM Author: DieselNut
@Eliot_240, the colors have pretty much gone to numbers here also, which I think is simpler and more "standard". Common color numbers here are 2700K, 3000K, 3500K, 4100K, 5000K and 6500K. They often incorporate the CRI in modern lamps also, such as "741" for a 70s CRI and 4100K temp, or "865" for 80s CRI and 6500K temp. These used to be designated as warm white, soft white, cool white and daylight. A CRI in the 60s is pretty pitiful in today's standards, but specialty lamps are exempt from many of the efficiency requirements. I have some Philips made in Holland lamps that are 3 foot T8 lamps that are "950", which is 90s CRI and 5000K. Beautiful and very bright!

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Aug 13, 2010 at 08:38 PM Author: arcblue
Interesting that you have a HomeBase there.....we used to have a hardware store chain here but it no longer exists....I remember I applied there for a summer job after high school.

Also interesting that you have a non-ALTO, European-etched T12 lamp imported from the U.S. - THAT looks better than what they sell here at Home Depot.

Though I found something interesting today in Seattle: A brand new garage retrofit using Philips 5000K F32T8 lamps - they did NOT have green ends! Perhaps they were new old-stock pre-Alto lamps, or maybe they came from Europe? I'll have to look more closely at the etch next time...

I'm lampin...

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ATL P42STUFF supersix94
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Aug 14, 2010 at 02:17 AM Author: SuperSix
@arcblue I've never seen an ALTO used here so I don't think they exist. F32T8s aren't really used here in Europe either, there's been a attempts to market them but they need special ballasts so the F36T8 is used instead which is a retrofit for T12s. Interestingly the higher efficiency of high frequency operation allows a 36W tube to be run with 32W power and produce the same amount of light which is another reason why we don't really need F32T8s.

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Aug 14, 2010 at 02:42 AM Author: dor123
@Eliot_240: The krypton buffered T8s initially developed in Europe to act as a retrofit on the preheat magnetic ballasts of the older argon buffered T12. However the same thing can't be done in the USA, because of the different electricity system and different ballast types (All US magnetic ballasts above 20W are HPF autotransformer ballasts and not simple choke ballasts), so the modern T8s can't retrofit the US T12 ballasts. So in the US, krypton T8s have to operates at their own ballasts, And there is no reason for importing the US T8s to Europe.
Regarding to importing ALTO fluorescents to Europe: Most of the ALTO fluorescents are T12 which are banned in Europe, and the other sizes of ALTO lamps aren't suitable for operation in Europe.
I also don't know if the ALTO fluorescents can be able to pass the international and european standards (Especially the RoHS one). Fluorescents that passed the RoHS standard have no liquid mercury at all and are based on amalgam instead.

I"m don't speak English well, and rely on online translating to write in this site.
Please forgive me if my choice of my words looks like offensive, while that isn't my intention.

I only working with the European date format (dd.mm.yyyy).

I lives in Israel, which is a 230-240V, 50hz country.

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Aug 14, 2010 at 03:35 AM Author: f36t8
@dor123: Are you sure RoHS bans liquid mercury fluorescents? As far as I know, RoHS only limits the maximum amount to 5, 8 or 10 mg of mercury per lamp depending on type.
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Aug 14, 2010 at 05:32 AM Author: dor123
@f36t8: According to Megamen page http://www.megaman.cc/global/greenroom/rohs.php , lamps with only a low dose of liquid mercury are compliant but not fully. To be fully complied, no liquid mercury should be used in the lamps at all and instead, amalgam should be used (In addition to less then 5 mg of mercury in the amalgam and lead free glass tubes).
Today, i think Megamen are the only CFLs that are fully RoHS compliant.

I"m don't speak English well, and rely on online translating to write in this site.
Please forgive me if my choice of my words looks like offensive, while that isn't my intention.

I only working with the European date format (dd.mm.yyyy).

I lives in Israel, which is a 230-240V, 50hz country.

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Aug 14, 2010 at 06:45 AM Author: sparkie
A T12 tube
Cool White
Not made in China

I must visit Homebase!!




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Sep 18, 2018 at 11:26 PM Author:

It's not a notation we see here, but yes, thats correct.

640 is probably just traditional F20T12/CW/33 for appliances.

they call CW 4000K in EU, we call it 4100K I don't why


It's not F20T12/CW/33...it's F25T12/CW/33 appliance lamp...just wanna let you know, Luminaire.
fluorescent lover 40
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Sep 19, 2018 at 06:35 AM Author: fluorescent lover 40

It's not F20T12/CW/33...it's F25T12/CW/33 appliance lamp...just wanna let you know, Luminaire.


I'm pretty sure he was referring to the shown lamp here.

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