Originally Posted by passedpawn
ALL plastics have UV stabilizers that strongly filter UVB and UVC. Even glass will be a problem. I've had to use fused silica for 310nm. I did have some plastic lenses made from a special polymer that passed UVB once... I still have some of the raw resin from that.
Sorry, I know that's no help. You can buy UV sterilizers for fish tanks and home sterilization, but I wonder how well they work. I think they typically use fluorescent lamps.
That's what I was afraid of, don't really wan't to go with high dollar crystal glass. I guess I wasn't originally clear, my primary thought for this was for a cider I have in the fermenter that I wanted to halt fermentation on and wanted another option other than chemicals.
Hadn't considered the possibility of skunking beer, but now I want to try it
Maybe I will brew a 2 gallon test batch of a pale ale, pull off a gallon to test under the UVC light and leave the other gallon as a control to see if it imparts noticable skunking.
If I could halt beer fermentation without ill effects, I did make a wonderful porter a while back that was awesome during an early sampling but later dried out as fermentation finished. Still good, but the early sample was better.
UVC is 290 nm - 100 nm