I need some good flashlights?

[glenn bradley]

I was going to comment that there are flashlight discussions that go on for pages on sites that cater to this. At 31 posts in 2 days I guess I don't have to point that out ;-) As discussed here, there are tiers of flashlight function and quality targeting different uses. The flashlight you seek is out there. It is often the price that makes me accept a funky feature I don't care about or a point of origin. Unfortunately, (or fortunately) the inexpensive ones change designs frequently as they rely on wow-factor to create sales. The serious brand names mentioned here will have better consistency of offerings and more logical steps to features and price. Good luck.

[John K Jordan]

UV light can help to sterilize surfaces too...

I think you need a fairly short wavelength for sterilizing. The UV flashlights lights I use for fluorescence are 365nm generally referred to as UVA. I do have a sterilizing UVC lamp, high power, runs on AC line voltage. I use it with shielding.

The best I have:
https://www.amazon.com/gp/product/B00IZTTI5G
https://www.amazon.com/gp/product/B014AYMBMQ
https://www.amazon.com/gp/product/B07SWW5FHB
The last one is comparable in light to the more expensive lights. The first one is nice since it also has white light, more useful in the woods at night.

Some years ago I bought a very cheap UV light that was quite good.
https://www.amazon.com/gp/product/B004R831H0
So I bought some more to give to friends - the maker had switched UV LEDs and the new one was NOT 365nm. I'm guessing it was closer to 400nm, not nearly as useful as 365nm for my use.

JKJ