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Philips 18w Sox-E - looking for life estimate

Philips 18w Sox-E - looking for life estimate

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This is currently my only lamp. How much life do you estimate is left based on appearence? I do have a plan in place to get some more

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Light Information

Light Information

Model Reference:Sox-E
Lamp Type:Low Pressure Sodium
Lumen Output:1800L
Color Temperature:1800K
Color Rendering Index:0
Factory Location:Belgium

File information

File information

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Album name:Lightingguy1994 / HID Lamps - HPS & LPS
Rating (1 votes):
File Size:517 KB
Date added:Aug 10, 2019
Dimensions:2464 x 1386 pixels
Displayed:84 times
Date Time:2019:08:10 21:05:34
DateTime Original:2019:08:10 21:05:34
Exposure Bias:0 EV
Exposure Time:1/24 sec
FNumber:f 1.8
Flash:No Flash
Focal length:4.42 mm
Make:LG Electronics
White Balance:0
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Aug 11, 2019 at 02:02 AM Author: James
You should definitely get some more, and ASAP because SOX18 is hard to find and skyrocketing in price! I have a Philips SOX 18W outdoor light that burns around 3000h/year, and while its original lamp from 1971 did 5 years, the more recently made lamps only seem to last about 2y, which is not long at all.

The lamp in your photo is a good old Philips which seems not heavily used and should hopefully work for its rated 18,000h. But the newer ones seem to be terrible. Also thanks to Philips’ technique of gettering the arc tube with blackened ends around the electrodes, which is good for long lamps, this blocks far too much light in the short 18W and they are notably dimmer than all others. I tried one GE lamp which only did 18 months, so now I am running an Osram to see if that will do better.

My best advice when you search for spare lamps is avoid the newer Philips if you can, and in general buy the oldest lamps you can find which will almost certainly deliver much better life and light output.

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Aug 11, 2019 at 07:51 AM Author: Skiller
This is a good old proper made lamp. Probably manufactured in the 80's as far as I can tell. It has seen some use, but should still have plenty of life left in it.

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tuopeek 111967450636623837217 tuopeek1 77334065@N05/
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Aug 11, 2019 at 09:18 AM Author: tuopeek
Nice old Sodium lamp, the newest feature on this lamp is the tougher lead in glass as it doesn’t have the older ceramic collars on the electrode wires. Can’t remember when this modification was made but my guess is early 1990s.
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Aug 11, 2019 at 10:44 AM Author: Lightingguy1994
Glad this is an older quality lamp, Unfortunately the only source I can go with that sells them for $85 a piece will likely be new. Ebay has nothing except theres one guy from UK selling them but those are far too expensive. I've got some local ads up looking to buy anyones stock

I did manage to purchase a new old stock Advance HPF ballast for SOX18 on ebay for US $75 + shipping from USA and its currently on the way, I just could not trust the low quality beat up ballast I have. It's very lossy, runs at 42 watts, low power factor and gets very hot fast. Surprised it still works. Hopefully I did not over pay for the new ballast.
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