"Activity expanded uncertainty of potassium-40 {40K CAS 13966-00-2} per unit dry weight of biota {Fucus vesiculosus (ITIS: 11335: WoRMS 145548)}"@en . . "SDN:P01::APOUX066" . "The measurement uncertainty scaled to a given confidence level of the rate of radioactive disintegrations due to the specified nuclide per unit weight of the specified organism or part thereof after drying."@en . .