{"data":{"id":"us/49-cfr-173.425","jurisdiction":"us","citation":"49 CFR 173.425","heading":"Table of activity limits—excepted quantities and articles.","body":"The limits applicable to instruments, articles, and limited quantities subject to exceptions under §§ 173.421 and 173.424 are set forth in table 4 as follows:\nTable 4—Activity Limits for Limited Quantities, Instruments, and Articles\nNature of contents Instruments and articles Limited quantity package limits 1\nLimits for each instrument or article 1 Package limits 1\nSolids:\nSpecial form 10−2 A1 A1 10−3 A1\nNormal form 10−2 A2 A2 10−3 A2\nLiquids:\nTritiated water:\n\u003c0.0037 TBq/L (0.1 Ci/L) 37 TBq (1,000 Ci)\n0.0037 TBq to 0.037 TBq/L (0.1 Ci to 1.0 Ci/L) 3.7 TBq (100 Ci)\n\u003e0.037 TBq/L (1.0 Ci/L) 0.037 TBq (1.0 Ci)\nOther Liquids 10−3 A2 10−1 A2 10−4 A2\nGases:\nTritium 2 2 × 10−2 A2 2 × 10−1 A2 2 × 10−2 A2\nSpecial form 10−3 A1 10−2 A1 10−3 A1\nNormal form 10−3 A2 10−2 A2 10−3 A2\n1 For mixtures of radionuclides see § 173.433(d).\n2 These values also apply to tritium in activated luminous paint and tritium adsorbed on solid carriers.","path":["Title 49—Transportation","Subtitle B—Other Regulations Relating to Transportation","CHAPTER I—PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION","SUBCHAPTER C—HAZARDOUS MATERIALS REGULATIONS","PART 173—SHIPPERS—GENERAL REQUIREMENTS FOR SHIPMENTS AND PACKAGINGS","Subpart I—Class 7 (Radioactive) Materials"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-49.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:34Z","sha256":"7148e7132b87ef4b36a8f689fc2418fcfa31c475616985c5681bdf2ea4ad718f","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-173.424","next":"us/49-cfr-173.426"},"notice":"GroundRules: Original legal text. Not legal advice."}