(2) Calibrate two separated readings on each scale or decade that will be used to show compliance; and (b) A licensee may not use survey instruments if the difference between the indicated exposure rate and the calculated exposure rate is more than 20 percent. 35.63 Determination H&S (a) A licensee shall determine and of dosages of record the activity of each dosage unsealed before medical use. byproduct (b) For a unit dosage, this material for determination must be made by medical use (1) Direct measurement of radioactivity; or (2) A decay correction, based on the activity or activity concentration determined by (i) A manufacturer or preparer licensed under 32.72 of this chapter or equivalent requirements; or (ii) An NRC or Agreement licensee for use in research in accordance with a Radioactive Drug Research protocol or an Investigational New Drug (IND) protocol accepted by FDA.
(2) Calibrate two separated readings on each scale or decade that will be used to show compliance; and (b) A licensee may not use survey instruments if the difference between the indicated exposure rate and the calculated exposure rate is more than 20 percent. 35.63 Determination of dosages of unsealed byproduct material for medical use H&S (a) A licensee shall determine and record the activity of each dosage before medical use. (b) For a unit dosage, this determination must be made by (1) Direct measurement of radioactivity; or (2) A decay correction, based on the activity or activity concentration determined by (i) A manufacturer or preparer licensed under 32.72 of this chapter or equivalent requirements; or (ii) An NRC or Agreement licensee for use in research in accordance with a Radioactive Drug Research protocol or an Investigational New Drug (IND) protocol accepted by FDA.
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