Ni. Karmalitsyn et al., STANDARDIZATION OF RA-226 RADIONUCLIDE SOLUTIONS, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 369(2-3), 1996, pp. 411-413
Ra-236 reference solutions with radium masses ranging from 0.1 to 5000
ng have found numerous applications in solving a number of metrologic
al problems in the field of environmental control, etc. Methods and eq
uipment are described which are employed to calibrate Ra-226 solutions
when certifying them as reference standards of the radium mass unit (
standard source No. 5427 prepared by O. Honigschmid).