[R-390] OA2 replacement

[Gord Hayward]

In my GRC 109 manual they talk about 0B2's having 6.7 nCu of Cobalt 60
and I recall other similar warnings about Nickel  63 and some Uranium 
isotopes
in the same tube family.  They were probably part of the plate material.

Same as silica gel - Do Not Eat.

Cheers, Gord VE3EOS

-- 

Gordon L. Hayward, Ph.D., P.Eng.,
Associate Professor, Biological Engineering,
School of Engineering, University of Guelph,
Guelph, Ontaro, N1G 2W1.