The radiation measurements stated on all of our radioactive items is guaranteed to be accurate.
It is measured with a calibrated, Stabilized Assay Meter, not just a simple Geiger Counter.
We measure the total Beta and Gamma radiation emissions from each sample
 in CPM (Counts Per Minute). The number stated under each sample is the combined Beta and Gamma emissions, taken from the area on the sample that produces the highest reading.
We DO NOT measure the Alpha radiation emissions or use a "Pancake" type probe,
as that produces falsely high readings.
We guarantee that all the samples we sell measure exactly what is stated.

Included with the purchase each Uranium Ore sample is a
"Certificate of Measured Radiation" stating the sample type, ID number,
and the measured radiation emissions.