DESCRIPTION
Marinelli beakers are filled with silicone rubber containing uniformly distributed radionuclide
or mixture of radionuclides. Default density of the active volume is 0,98 g.cm-3 and mean
atomic number approaches water. The standards are available in 3 types of polypropylene
beakers with default volumes 450, 500 and 1000 ml. Other volumes, nuclides, activities or
beakers are available on request. Custom geometry can be filled with no extra charge.

Mixture of 10 isotopes (241Am, 109Cd, 139Ce, 57Co, 60Co, 137Cs, 113Sn, 85Sr, 88Y, 51Cr) developed especially for calibration of
gamma measuring equipment. It covers the gamma energy range of 59,540– 1836,03 keV with 12 energy peaks.
Combined standard uncertainty of activity is below approximately 3 %.

APPLICATION
Energy and efficiency calibration of gamma spectrometers.

MEASUREMENTS
The standards are prepared from the standard solutions ER(EB) whose activity is determined
by absolute method. The final sources are checked by measurement on gamma
spectrometer with HPGe detector. Combined standard uncertainty of activity is approx. 2 %.

PRODUCT TYPES
Our multi-gamma mixture can be used in a wide range of forms including the most popular: liquid solutions (ER-mix),
and a silicon resin (CBSS2). Without Hg-203, it can also be produced as a planar source (EM/EZ), filter, or a sample of
contaminated steel (ES).