[UVC SAFETY WARNING] Anybody knows source for powerful unfiltered low pressure mercury lamps (not from China)?

[lukaszgryglicki]

[UV SAFETY] UV-C Light Is Dangerous

 

NEVER look at a UV-C light.

NEVER let UV-C light hit your skin or eyes directly or by reflection.

UV-C light can cause:

• severe burns of the eyes and the skin, and
• DNA damage from broken chromosomes.

When working with UV-C illumination, you MUST:

• cover up completely, 
• wear head & eye protection, and
• have strong ventilation.

---

 

Hi, I want to buy a powerful low pressure mercury lamp that I can use from wall socket (220V) - ideally E26/E27 but can be something else if I can adapt it to wall socket.

I already have 3 bulbs E27 rated 25W.

I've found some more powerful but delivery time is 40+ days and source is China.

Does anybody know any particular model name/brand name so I can look directly for it?

 

I want it tyo produce as much as possible 253.7nm and 184.45nm (I want lamps that do not block this ozone genrating frequency). Ideally they should be up to 1 kW.

Would be really if anybody can provide any search hints...

 

I DONiT want LEDs - they are only 1% efficient, this must be mercury low pressure lamps, I can consider high pressure lamps but then filtering out other frequencies becoming extremely difficult while most of them also block UV-C which is the opposite of what I want...

 

[UV-C is dangerous]

 

[colinbm]

Ozone is deadly !

How are you going to filter these lights ?

 

[lukaszgryglicki]

I know, added a warning, anyway, any answers welcomed.

I want 184.45 line because I want to stress test UV-Nikkor. It is said it transmits from 200nm, maybe it is able to see 184nm too? Maybe hardly, maybe not, but why not check? I already bought two Edmund filters, for 253.7nm 10nm BP and for 218nm... I can buy third for 185nm.

 

 

 

[JMC]

I have never used these guys, but they do have contact details for Europe, and perhaps are worth reaching out to - https://www.light-sources.com/blog/185nm-uv-lamp-for-ozone-disinfection/

[Alaun]

… produces ozone …. That means, air is a strong filter to absorb the radiation.

[Andy Perrin]

We have had variations on the "EUV gets absorbed by the air" discussion before and while it's true, the actual amount of absorption still seems to allow quite a bit of light to get transmitted if the distances are under a meter from what dabateman said I think?

[dabateman]

I didn't want to recommend anything,  as I don't want to be responsible for Lukas experiments. 

But in the winter when its really dry, much less humid air than in the summer, in a controlled space (keep the kids far away)  you can image within a meter. Most of my tests were less than that, closer to a foot or 30cm from my subject.  

But than my good light burnt out and I was refunded.  I can't afford to buy an other one now, nor can I keep the kids away as we are still isolating.

[Andy Perrin]

You aren’t responsible for Lukas’s experiments, David. We are all adults and we can be fools or not accordingly…

[lukaszgryglicki]

Thanks for the link, I'll contact them. I have an old ranch in the countryside when I can do experiments outside (time limits me severely recently) - I know what ozone is, what UV-C is and will be doing those tests outside and at night (so I will have minimal light pollution).