[ RadSafe ] observations on iodized salt

William Lipton doctorbill34 at gmail.com
Thu Mar 24 10:24:53 CDT 2011

The radiation reading probably comes from the K-40 in the potassium
chloride.  I doubt that you would get a significant count on plain iodized

Bill Lipton
doctorbill at post.harvard.edu
It's not about dose, it's about trust.

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
> 3922 Wood Hall
> Western Michigan University
> 1903 W. Michigan Ave.
> Kalamazoo, MI  49008-5410
> Office (269) 387-5933
> Cell  (269) 744-0996
> E-mail: john.center at wmich.edu
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