The Berkey manufacturer, NMCL, has recently released the second round of independent lab testing for the removal of radioactive isotopes. This round for the testing of beta radiological contaminants was done for the following radioactive isotopes:
Actinium-227
Californium-251 and -252
Cesium-137
Cobalt-60
Iodine-129 and -131
Lead-210
Nickel-63
Promethium-145
Strontium-90
Technetium-99
The Black Berkey filters were found to remove the radioactive contaminants listed above to a level of 95.3%.
The complete radiological test results can be found here: Radiation Test results.
