Kr85 has a 10-year half-life, so displays manufactured in the 1980's will have about 10% of the radioactivity they once had.
I recall reading somewhere that Kr85 was optional in displays; generally intended for low or zero ambient-lighting conditions. So even if your display's radioactivity has withered-away it is still operable. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/b81d3b6a-bb1f-47c1-aeb6-524959f2f11d%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
