Quote Originally Posted by clay
My UV densitometer indicates that the newer Tmax100 film base blocks UV light effectively - my b+f is about 1.1, which makes the film useless for UV sensitive alt printing processes. Caveat emptor.

Sorry for any confusion. I now see that the original message was about TMAX-100 but for some reason I changed the topic to TMY.

You are of course absolutely right about the UV blocking of TMAX-100. It is virtually useless for alternative processes unless you like really long exposures.