I disagree. Read back for the reason why from the Prof, no tritium is yet old enough to be fully at background yet, well maybe the 1960s stuff wouldn't give much of a return but stuff from the 1990s has only undergone 2 half lives so is still at a quarter the potency when new.
You haven't read my answer. No gamma counter will read tritium.
Does anyone have a Geiger they can use to check an 80’s/90’s tritium watch against background?
I have a counter but unfortunately nothing newer than the late 60’s.
What instrument exactly are you using?
