This specification specifies the requirements, quality assurance regulations and delivery preparations for cerium-139, ytterbium-169 and selenium-75 radioactive standard solutions. This specification applies to the preparation, value setting and verification of cerium-139, ytterbium-169 and selenium-75 radioactive standard solutions.
EJ/T 20052-2014 history
2014EJ/T 20052-2014 Specifications for cerium-139, ytterbium-169 and selenium-75 radioactive reference solution