Document ID: chunk:federal_register_of_legislation:F2024L01024:front:0:p87
Version: federal_register_of_legislation:F2024L01024
Segment Type: other
Provision Reference: 
Character Range: 247043–249810

(including cylinder segments) with an inside diameter between 100 mm and 300 mm; and
b. A mass greater than 20 kg.
Note: 1C226 does not apply to manufactures specially designed as weights or gamma‑ray collimators.
1. C. 227. Calcium having both of the following characteristics:
a. Containing less than 1,000 parts per million by weight of metallic impurities other than magnesium; and
b. Containing less than 10 parts per million by weight of boron.
1. C. 228. Magnesium having both of the following characteristics:
a. Containing less than 200 parts per million by weight of metallic impurities other than calcium; and
b. Containing less than 10 parts per million by weight of boron.
1. C. 229. Bismuth having both of the following characteristics:
a. A purity of 99.99% or greater by weight; and
b. Containing less than 10 ppm (parts per million) by weight of silver.
1. C. 230. Beryllium metal, alloys containing more than 50% beryllium by weight, beryllium compounds, manufactures thereof, and waste or scrap of any of the foregoing, other than that specified in the Munitions List controls.
            N.B.: SEE ALSO MUNITIONS LIST CONTROLS.
1. C. 231. Hafnium metal, alloys containing more than 60% hafnium by weight, hafnium compounds containing more than 60% hafnium by weight, manufactures thereof, and waste or scrap of any of the foregoing.
1. C. 232. Helium‑3 (3He), mixtures containing helium‑3, and products or devices containing any of the foregoing.
Note: 1C232 does not apply to a product or device containing less than 1 g of helium‑3.
1. C. 233. Lithium enriched in the lithium‑6 (6Li) isotope to greater than its natural isotopic abundance, and products or devices containing enriched lithium, as follows: elemental lithium, alloys, compounds, mixtures containing lithium, manufactures thereof, waste or scrap of any of the foregoing.
Note: 1C233 does not apply to thermoluminescent dosimeters.
Technical Note:
The natural isotopic abundance of lithium‑6 is approximately 6.5 weight per cent (7.5 atom per cent).
1. C. 234. Zirconium with a hafnium content of less than 1 part hafnium to 500 parts zirconium by weight, as follows: metal, alloys containing more than 50% zirconium by weight, compounds, manufactures thereof, waste or scrap of any of the foregoing.
Note: 1C234 does not apply to zirconium in the form of foil having a thickness of 0.10 mm or less.
1. C. 235. Tritium, tritium compounds, mixtures containing tritium in which the ratio of tritium to hydrogen atoms exceeds 1 part in 1000, and products or devices containing any of the foregoing.
Note: 1C235 does not apply to a product or device containing less than 1.48 x 103 GBq (40 Ci) of tritium.
1. C. 236. Radionuclides appropriate for making neutron sources based on alpha‑n