[ RadSafe ] observations on iodized salt

Scott Davidson bsdnuke at gmail.com
Thu Mar 24 08:24:22 CDT 2011

I would suspect not, the likely culprit would be the potassium-40
which has an extremely long half life.

On Thu, Mar 24, 2011 at 9:05 AM, John Gerald Center, Jr
<john.center at wmich.edu> wrote:
> We use a Ludlum model 14C and a pancake probe with the 0.1 scale calibrated to cpm.  We would take a couple of tablespoons of Morton Lite Salt, a mixture of iodized salt and potassium chloride, and count it during radiation safety training classes.  Background was less than 1000 cpm, a newly opened package of this salt would peg the meter on the 0.1 scale.  Older, opened containers (2 years) still near max reading (6000 cpm).  I used it none the less.  I have never tried to count plain iodized salt.  Would I get different results?
> John
> John G. Center, Jr.
> Radiation Safety Officer
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