§ 35.2433. Records of decay of strontium-90 sources for ophthalmic treatments.
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/us/cfr/t10/s§ 35.2433·A research copy — for the controlling text, always check the official state or federal source. Not legal advice.
(a)A licensee shall maintain a record of the activity of a strontium-90 source required by § 35.433 for the life of the source.
(b)The record must include—
(1)The date and initial activity of the source as determined under § 35.432; and
(2)For each decay calculation, the date and the source activity as determined under § 35.433.