Hi, Ken.

No, I have not closely examined the red lights, but they are pretty much all I have used until a week ago when I got a Thomas safelight with bona-fide filters. The only fogging I have had was from my cracked Brownie 0C safelight. I used to use it and the red lamps, but when it cracked and started fogging things, I just tossed it and went to all red. I get them at Freestyle; I'm not talking about "Halloween" lamps from the drug store.