Method for calibration measurement in a liquid scintillation counter and carrier used in the method
AssigneeWallac Oy
InventorMatti Antero Reunanen
Life of this patent
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Abstract
The present invention relates to a method for use in liquid scintillation measurements to feed an accurately determined amount of radioactive substance to a fluid scintillation system for a calibration measurement. According to the invention an accurately determined amount of radioactive substance is adsorbed to a carrier, which is introduced into the fluid scintillation system. The invention also relates to a carrier for use in the method.
Claims14
Method for feeding an accurately determined amount of radioactive substance to a fluid scintillation system for a calibration measurement in a liquid scintillation counter, the method comprising the steps of feeding of a carrier to said fluid scintillation system, said carrier having the radioactive substance adsorbed to it, and allowing said radioactive substance to dissolve in said fluid scintillation system.
Method for feeding an accurately determined amount of radioactive substance to a fluid scintillation system for a calibration measurement in a liquid scintillation counter, the method comprising the steps of supplying of a fluid scintillation system into a measurement vial, introducing into said measurement vial a carrier having adsorbed to it a radioactive substance of a type soluble in said fluid scintillation system, immersing said carrier into said fluid scintillation system and allowing said radioactive substance to dissolve in said fluid scintillation system.
Method for feeding an accurately determined amount of radioactive substance to a fluid scintillation system for a calibration measurement in a liquid scintillation counter, the method comprising the steps of introducing into a measuring vial a carrier having a radioactive substance adsorbed to it, supplying into said measurement vial a fluid scintillation system of a type in which said radioactive substance is soluble, and allowing said radioactive substance to dissolve in said fluid scintillation system.
Method for feeding an accurately determined amount of radioactive substance to a fluid scintillation system for a calibration measurement in a liquid scintillation counter, the method comprising the steps of dosing of an accurately determined amount of a solution to a carrier, said solution comprising a volatile solvent and a radioactive substance of low volatility, followed by evaporation of said solvent, introducing said carrier having said radioactive substance adsorbed to it, together with a fluid scintillation system into a measurement vial and allowing said radioactive substance to dissolve in said fluid scintillation system.
Carrier for use in a calibration measurement when feeding to a fluid scintillation system an accurately determined amount of radioactive substance, said carrier comprising a bowl-shaped element having said radioactive substance adsorbed to part of its concave inner surface.
Dependencies are inferred from the claim text.