Review on 🧪 1 Pound Potassium Chloride KCl by Knate Scarpelli

I bought it as a low level radiation source for a gamma spectrometer. I can confirm that it contains potassium - the characteristic gamma rays of K-40 with an energy of 1460 keV are clearly visible. The Geiger counter also registers the amount of radiation, consistent with it being composed primarily of potassium chloride. However, it's not very clean; probably technical grade, 95% or so. It is a pink, cream color; KCl should be white. I dissolved some in water and found that it definitely leaves an insoluble residue. I haven't tried the flame test. If all you want is technical quality and cleanliness isn't a big deal, this is a good choice. Of course, what I use it for doesn't have to be clean, so I'm happy with that. Customers wanting pure KCl should look elsewhere.