{"data":{"id":"us/10-cfr-35.2433","jurisdiction":"us","citation":"10 CFR 35.2433","heading":"Records of decay of strontium-90 sources for ophthalmic treatments.","body":"(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.\n(b) The record must include—\n(1) The date and initial activity of the source as determined under § 35.432; and\n(2) For each decay calculation, the date and the source activity as determined under § 35.433.","path":["Title 10—Energy","CHAPTER I—NUCLEAR REGULATORY COMMISSION","PART 35—MEDICAL USE OF BYPRODUCT MATERIAL","Subpart L—Records"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-10.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:24:09Z","sha256":"40cce7bc490f1be3cdad10ef27e5fa81a240936b4b7293e6dbb908c3f062bbfe","source_id":"us-cfr","stale":true,"prev":"us/10-cfr-35.2432","next":"us/10-cfr-35.2605"},"notice":"GroundRules: Original legal text. Not legal advice."}