10 C.F.R. § 33.100
Current through October 31, 2024
| Byproduct material | Col. I curies | Col. II curies |
| Antimony-122 | 1 | 0.01 |
| Antimony-124 | 1 | .01 |
| Antimony-125 | 1 | .01 |
| Arsenic-73 | 10 | .1 |
| Arsenic-74 | 1 | .01 |
| Arsenic-76 | 1 | .01 |
| Arsenic-77 | 10 | .1 |
| Barium-131 | 10 | .1 |
| Barium-140 | 1 | .01 |
| Beryllium-7 | 10 | 0.1 |
| Bismuth-210 | .1 | .001 |
| Bromine-82 | 10 | .1 |
| Cadmium-109 | 1 | .01 |
| Cadmium-115m | 1 | .01 |
| Cadmium-115 | 10 | .1 |
| Calcium-45 | 1 | .01 |
| Calcium-47 | 10 | .1 |
| Carbon-14 | 100 | 1. |
| Cerium-141 | 10 | .1 |
| Cerium-143 | 10 | .1 |
| Cerium-144 | .1 | .001 |
| Cesium-131 | 100 | 1. |
| Cesium-134m | 100 | 1. |
| Cesium-134 | .1 | .001 |
| Cesium-135 | 1 | .01 |
| Cesium-136 | 10 | .1 |
| Cesium-137 | .1 | .001 |
| Chlorine-36 | 1 | .01 |
| Chlorine-38 | 100 | 1. |
| Chromium-51 | 100 | 1. |
| Cobalt-57 | 10 | 0.1 |
| Cobalt-58m | 100 | 1. |
| Cobalt-58 | 1 | .01 |
| Cobalt-60 | .1 | .001 |
| Copper-64 | 10 | .1 |
| Dysprosium-165 | 100 | 1. |
| Dysprosium-166 | 10 | .1 |
| Erbium-169 | 10 | .1 |
| Erbium-171 | 10 | .1 |
| Europium-152 9.2 h | 10 | .1 |
| Europium-152 13 y | .1 | .001 |
| Europium-154 | .1 | .001 |
| Europium-155 | 1 | .01 |
| Fluorine-18 | 100 | 1. |
| Gadolinium-153 | 1 | .01 |
| Gadolinium-159 | 10 | .1 |
| Gallium-72 | 10 | .1 |
| Germanium-71 | 100 | 1 |
| Gold-198 | 10 | .1 |
| Gold-199 | 10 | .1 |
| Hafnium-181 | 1 | .01 |
| Holmium-166 | 10 | .1 |
| Hydrogen-3 | 100 | 1 |
| Indium-113m | 100 | 1 |
| Indium-114m | 1 | .01 |
| Indium-115m | 100 | 1 |
| Indium-115 | 1 | .01 |
| Iodine-125 | .1 | .001 |
| Iodine-126 | .1 | .001 |
| Iodine-129 | .1 | .01 |
| Iodine-131 | .1 | .001 |
| Iodine-132 | 10 | .1 |
| Iodine-133 | 1 | .01 |
| Iodine-134 | 10 | .1 |
| Iodine-135 | 1 | .01 |
| Iridium-192 | 1 | .01 |
| Iridium-194 | 10 | .1 |
| Iron-55 | 10 | .1 |
| Iron-59 | 1 | .01 |
| Krypton-85 | 100 | 1 |
| Krypton-87 | 10 | .1 |
| Lanthanum-140 | 1 | .01 |
| Lutetium-177 | 10 | .1 |
| Manganese-52 | 1 | .01 |
| Manganese-54 | 1 | .01 |
| Manganese-56 | 10 | .1 |
| Mercury-197m | 10 | .1 |
| Mercury-197 | 10 | .1 |
| Mercury-203 | 1 | .01 |
| Molybdenum-99 | 10 | .1 |
| Neodymium-147 | 10 | .1 |
| Neodymium-149 | 10 | .1 |
| Nickel-59 | 10 | .1 |
| Nickel-63 | 1 | .01 |
| Nickel-65 | 10 | .1 |
| Niobium-93m | 1 | .01 |
| Niobium-95 | 1 | .01 |
| Niobium-97 | 100 | 1. |
| Osmium-185 | 1 | .01 |
| Osmium-191m | 100 | 1. |
| Osmium-191 | 10 | .1 |
| Osmium-193 | 10 | .1 |
| Palladium-103 | 10 | .1 |
| Palladium-109 | 10 | .1 |
| Phosphorus-32 | 1 | .01 |
| Platinum-191 | 10 | .1 |
| Platinum-193m | 100 | 1. |
| Platinum-193 | 10 | .1 |
| Platinum-197m | 100 | 1 |
| Platinum-197 | 10 | .1 |
| Polonium-210 | .01 | .0001 |
| Potassium-42 | 1 | .01 |
| Praseodymium-142 | 10 | .1 |
| Praseodymium-143 | 10 | .1 |
| Promethium-147 | 1 | .01 |
| Promethium-149 | 10 | .1 |
| Radium-226 | 0.01 | 0.0001 |
| Rhenium-186 | 10 | .1 |
| Rhenium-188 | 10 | .1 |
| Rhodium-103m | 1,000 | 10. |
| Rhodium-105 | 10 | .1 |
| Rubidium-86 | 1 | .01 |
| Rubidium-87 | 1 | .01 |
| Ruthenium-97 | 100 | 1. |
| Ruthenium-103 | 1 | .01 |
| Ruthenium-105 | 10 | .1 |
| Ruthenium-106 | .1 | .001 |
| Samarium-151 | 1 | .01 |
| Samarium-153 | 10 | .1 |
| Scandium-46 | 1 | .01 |
| Scandium-47 | 10 | .1 |
| Scandium-48 | 1 | .01 |
| Selenium-75 | 1 | .01 |
| Silicon-31 | 10 | .1 |
| Silver-105 | 1 | .01 |
| Silver-110m | .1 | .001 |
| Silver-111 | 10 | .1 |
| Sodium-22 | 0.1 | 0.001 |
| Sodium-24 | 1 | .01 |
| Strontium-85m | 1,000 | 10. |
| Strontium-85 | 1 | .01 |
| Strontium-89 | 1 | .01 |
| Strontium-90 | .01 | .0001 |
| Strontium-91 | 10 | .1 |
| Strontium-92 | 10 | .1 |
| Sulphur-35 | 10 | .1 |
| Tantalum-182 | 1 | .01 |
| Technetium-96 | 10 | .1 |
| Technetium-97m | 10 | .1 |
| Technetium-97 | 10 | .1 |
| Technetium-99m | 100 | 1. |
| Technetium-99 | 1 | .01 |
| Tellurium-125m | 1 | .01 |
| Tellurium-127m | 1 | .01 |
| Tellurium-127 | 10 | .1 |
| Tellurium-129m | 1 | .01 |
| Tellurium-129 | 100 | 1 |
| Tellurium-131m | 10 | .1 |
| Tellurium-132 | 1 | .01 |
| Terbium-160 | 1 | .01 |
| Thallium-200 | 10 | .1 |
| Thallium-201 | 10 | .1 |
| Thallium-202 | 10 | .1 |
| Thallium-204 | 1 | .01 |
| Thulium-170 | 1 | .01 |
| Thulium-171 | 1 | .01 |
| Tin-113 | 1 | .01 |
| Tin-125 | 1 | .01 |
| Tungsten-181 | 1 | .01 |
| Tungsten-185 | 1 | .01 |
| Tungsten-187 | 10 | .1 |
| Vanadium-48 | 1 | .01 |
| Xenon-131m | 1,000 | 10. |
| Xenon-133 | 100 | 1. |
| Xenon-135 | 100 | 1. |
| Ytterbium-175 | 10 | .1 |
| Yttrium-90 | 1 | .01 |
| Yttrium-91 | 1 | .01 |
| Yttrium-92 | 10 | .1 |
| Yttrium-93 | 1 | .01 |
| Zinc-65 | 1 | .01 |
| Zinc-69m | 10 | .1 |
| Zinc-69 | 100 | 1. |
| Zirconium-93 | 1 | .01 |
| Zirconium-95 | 1 | .01 |
| Zirconium-97 | 1 | .01 |
| Any byproduct material other than alpha emitting byproduct material not listed above | .1 | .001 |
10 C.F.R. §33.100
Sec. 201 , Pub. L. 93-438 ; 88 Stat. 1242 (42 U.S.C. 5841 )