Code of Maine Rules › 10 - DEPARTMENT OF HEALTH AND HUMAN SERVICES › 144 - DEPARTMENT OF HEALTH AND HUMAN SERVICES - GENERAL › Chapter 220 - Rules Relating to Radiation Protection › Part D - STANDARDS FOR PROTECTION AGAINST RADIATION › Appendix 144-220-D-C - QUANTITIES[1] OF LICENSED OR REGISTERED MATERIAL REQUIRING LABELING

Current through 2024-29, July 17, 2024
Radionuclide
Quantity (µCi)*
Radionuclide
Quantity (µCi)*
Hydrogen-3
1,000
Chromium-48
1,000
Beryllium-7
1,000
Chromium-49
1,000
Beryllium-10
1
Chromium-51
1,000
Carbon-11
1,000
Manganese-51
1,000
Carbon-14
100
Manganese-52m
1,000
Fluorine-18
1,000
Manganese-52
100
Sodium-22
10
Manganese-53
1,000
Sodium-24
100
Manganese-54
100
Magnesium-28
100
Manganese-56
1,000
Aluminum-26
10
Iron-52
100
Silicon-31
1,000
Iron-55
100
Silicon-32
1
Iron-59
10
Phosphorus-32
10
Iron-60
1
Phosphorus-33
100
Cobalt-55
100
Sulfur-35
100
Cobalt-56
10
Chlorine-36
10
Cobalt-57
100
Chlorine-38
1,000
Cobalt-58m
1,000
Chlorine-39
1,000
Cobalt-58
100
Argon-39
1,000
Cobalt-60m
1,000
Argon-41
1,000
Cobalt-60
1
Potassium-40
100
Cobalt-61
1,000
Potassium-42
1,000
Cobalt-62m
1,000
Potassium-43
1,000
Nickel-56
100
Potassium-44
1,000
Nickel-57
100
Potassium-45
1,000
Nickel-59
100
Calcium-41
100
Nickel-63
100
Calcium-45
100
Nickel-65
1,000
Calcium-47
100
Nickel-66
10
Scandium-43
1,000
Copper-60
1,000
Scandium-44m
100
Copper-61
1,000
Scandium-44
100
Copper-64
1,000
Scandium-46
10
Copper-67
1,000
Scandium-47
100
Zinc-62
100
Scandium-48
100
Zinc-63
1,000
Scandium-49
1,000
Zinc-65
10
Titanium-44
1
Zinc-69m
100
Titanium-45
1,000
Zinc-69
1,000
Vanadium-47
1,000
Zinc-71m
1,000
Vanadium-48
100
Zinc-72
100
Vanadium-49
1,000
Gallium-65
1,000
Germanium-66
1,000
Rubidium-79
1,000
Germanium-67
1,000
Rubidium-81m
1,000
Germanium-68
10
Rubidium-81
1,000
Germanium-69
1,000
Rubidium-82m
1,000
Germanium-71
1,000
Rubidium-83
100
Germanium-75
1,000
Rubidium-84
100
Germanium-77
1,000
Rubidium-86
100
Germanium-78
1,000
Rubidium-87
100
Arsenic -69
1,000
Rubidium-88
1,000
Arsenic -70
1,000
Rubidium-89
1,000
Arsenic -71
100
Strontium-80
100
Arsenic -72
100
Strontium-81
1,000
Arsenic -73
100
Strontium-83
100
Arsenic -74
100
Strontium-85m
1,000
Arsenic -76
100
Strontium-85
100
Arsenic -77
100
Strontium-87m
1,000
Arsenic -78
1,000
Strontium-89
10
Selenium-70
1,000
Strontium-90
0.1
Selenium-73m
1,000
Strontium-91
100
Selenium-73
100
Strontium-92
100
Selenium-75
100
Yttrium-86m
1,000
Selenium-79
100
Yttrium-86
100
Selenium-81m
1,000
Yttrium-87
100
Selenium-81
1,000
Yttrium-88
10
Selenium-83
1,000
Yttrium-90m
1,000
Bromine-74m
1,000
Yttrium-90
10
Bromine-74
1,000
Yttrium-91m
1,000
Bromine-75
1,000
Yttrium-91
10
Bromine-76
100
Yttrium-92
100
Bromine-77
1,000
Yttrium-93
100
Bromine-80m
1,000
Yttrium-94
1,000
Bromine-80
1,000
Yttrium-95
1,000
Bromine-82
100
Zirconium-86
100
Bromine-83
1,000
Zirconium-88
10
Bromine-84
1,000
Zirconium-89
100
Krypton-74
1,000
Zirconium-93
1
Krypton-76
1,000
Zirconium-95
10
Krypton-77
1,000
Zirconium-97
100
Krypton-79
1,000
Niobium-88
1,000
Niobium-89m (66 min)
1,000
Palladium-101
1,000
Niobium-89 (122 min)
1,000
Palladium-103
100
Niobium-90
100
Palladium-107
10
Niobium-93m
10
Palladium-109
100
Niobium-94
1
Silver-102
1,000
Niobium-95m
100
Silver-103
1,000
Niobium-95
100
Silver-104m
1,000
Niobium-96
100
Silver-104
1,000
Niobium-97
1,000
Silver-105
100
Niobium-98
1,000
Silver-106m
100
Molybdenum-90
100
Silver-106
1,000
Molybdenum-93m
100
Silver-108m
1
Molybdenum-93
10
Silver-110m
10
Molybdenum-99
100
Silver-111
100
Molybdenum-101
1,000
Silver-112
100
Technetium-93m
1,000
Silver-115
1,000
Technetium-93
1,000
Cadmium-104
1,000
Technetium-94m
1,000
Cadmium-107
1,000
Technetium-94
1,000
Cadmium-109
1
Technetium-96m
1,000
Cadmium-113m
0.1
Technetium-96
100
Cadmium-113
100
Technetium-97m
100
Cadmium-115m
10
Technetium-97
1,000
Cadmium-115
100
Technetium-98
10
Cadmium-117m
1,000
Technetium-99m
1,000
Cadmium-117
1,000
Technetium-99
100
Indium-109
1,000
Technetium-101
1,000
Indium-110m (69.1m)
1,000
Technetium-104
1,000
Indium-110 (4.9h)
1,000
Ruthenium-94
1,000
Indium-111
100
Ruthenium-97
1,000
Indium-112
1,000
Ruthenium-103
100
Indium-113m
1,000
Ruthenium-105
1,000
Indium-114m
10
Ruthenium-106
1
Indium-115m
1,000
Rhodium-99m
1,000
Indium-115
100
Rhodium-99
100
Indium-116m
1,000
Rhodium-100
100
Indium-117m
1,000
Rhodium-101m
1,000
Indium-117
1,000
Rhodium-101
10
Indium-119m
1,000
Rhodium-102m
10
Tin-110
100
Rhodium-102
10
Tin-111
1,000
Rhodium-103m
1,000
Tin-113
100
Rhodium-105
100
Tin-117m
100
Rhodium-106m
1,000
Tin-119m
100
Rhodium-107
1,000
Tin-121m
100
Palladium-100
100
Tin-121
1,000
Tin-123m
1,000
Iodine-120m
1,000
Tin-123
10
Iodine-120
100
Tin-125
10
Iodine-121
1,000
Tin-126
10
Iodine-123
100
Tin-127
1,000
Iodine-124
10
Tin-128
1,000
Iodine-125
1
Antimony-115
1,000
Iodine-126
1
Antimony-116m
1,000
Iodine-128
1,000
Antimony-116
1,000
Iodine-129
1
Antimony-117
1,000
Iodine-130
10
Antimony-118m
1,000
Iodine-131
1
Antimony-119
1,000
Iodine-132m
100
Antimony-120 (16m)
1,000
Iodine-132
100
Antimony-120 (5.76d)
100
Iodine-133
10
Antimony-122
100
Iodine-134
1,000
Antimony-124m
1,000
Iodine-135
100
Antimony-124
10
Xenon-120
1,000
Antimony-125
100
Xenon-121
1,000
Antimony-126m
1,000
Xenon-122
1,000
Antimony-126
100
Xenon-123
1,000
Antimony-127
100
Xenon-125
1,000
Antimony-128 (10.4m)
1,000
Xenon-127
1,000
Antimony-128 (9.O1h)
100
Xenon-129m
1,000
Antimony-129
100
Xenon-131m
1,000
Antimony-130
1,000
Xenon-133m
1,000
Antimony-131
1,000
Xenon-133
1,000
Tellurium-116
1,000
Xenon-135m
1,000
Tellurium-121m
10
Xenon-135
1,000
Tellurium-121
100
Xenon-138
1,000
Tellurium-123m
10
Cesium-125
1,000
Tellurium-123
100
Cesium-127
1,000
Tellurium-125m
10
Cesium-129
1,000
Tellurium-127m
10
Cesium-130
1,000
Tellurium-127
1,000
Cesium-131
1,000
Tellurium-129m
10
Cesium-132
100
Tellurium-129
1,000
Cesium-134m
1,000
Tellurium-131m
10
Cesium-134
10
Tellurium-131
100
Cesium-135m
1,000
Tellurium-132
10
Cesium-135
100
Tellurium-133m
100
Cesium-136
10
Tellurium-133
1,000
Cesium-137
10
Tellurium-134
1,000
Cesium-138
1,000
Barium-126
1,000
Promethium-141
1,000
Barium-128
100
Promethium-143
100
Barium-131m
1,000
Promethium-144
10
Barium-131
100
Promethium-145
10
Barium-133m
100
Promethium-146
1
Barium-133
100
Promethium-147
10
Barium-135m
100
Promethium-148m
10
Barium-139
1,000
Promethium-148
10
Barium-140
100
Promethium-149
100
Barium-141
1,000
Promethium-150
1,000
Barium-142
1,000
Promethium-151
100
Lanthanum-131
1,000
Samarium-141m
1,000
Lanthanum-132
100
Samarium-141
1,000
Lanthanum-135
1,000
Samarium-142
1,000
Lanthanum-137
10
Samarium-145
100
Lanthanum-138
100
Samarium-146
1
Lanthanum-140
100
Samarium-147
100
Lanthanum-141
100
Samarium-151
10
Lanthanum-142
1,000
Samarium-153
100
Lanthanum-143
1,000
Samarium-155
1,000
Cerium-134
100
Samarium-156
1,000
Cerium-135
100
Europium-145
100
Cerium-137m
100
Europium-146
100
Cerium-137
1,000
Europium-147
100
Cerium-139
100
Europium-148
10
Cerium-141
100
Europium-149
100
Cerium-143
100
Europium-150 (12.62h)
100
Cerium-144
1
Europium-150 (34.2y)
1
Praseodymium-136
1,000
Europium-152m
100
Praseodymium-137
1,000
Europium-152
1
Praseodymium-138m
1,000
Europium-154
1
Praseodymium-139
1,000
Europium-155
10
Praseodymium-142m
1,000
Europium-156
100
Praseodymium-142
100
Europium-157
100
Praseodymium-143
100
Europium-158
1,000
Praseodymium-144
1,000
Gadolinium-145
1,000
Praseodymium-145
100
Gadolinium-146
10
Praseodymium-147
1,000
Gadolinium-147
100
Neodymium-136
1,000
Gadolinium-148
0.001
Neodymium-138
100
Gadolinium-149
100
Neodymium-139m
1,000
Gadolinium-151
10
Neodymium-139
1,000
Gadolinium-152
100
Neodymium-141
1,000
Gadolinium-153
10
Neodymium-147
100
Gadolinium-159
100
Neodymium-149
1,000
Neodymium-151
1,000
Terbium-147
1,000
Ytterbium-167
1,000
Terbium-149
100
Ytterbium-169
100
Terbium-150
1,000
Ytterbium-175
100
Terbium-151
100
Ytterbium-177
1,000
Terbium-153
1,000
Ytterbium-178
1,000
Terbium-154
100
Lutetium-169
100
Terbium-155
1,000
Lutetium-170
100
Terbium-156m (5.Oh)
1,000
Lutetium-171
100
Terbium-156m (24.4h)
1,000
Lutetium-172
100
Terbium-156
100
Lutetium-173
10
Terbium-157
10
Lutetium-174m
10
Terbium-158
1
Lutetium-174
10
Terbium-160
10
Lutetium-176m
1,000
Terbium-161
100
Lutetium-176
100
Dysprosium-155
1,000
Lutetium-177m
10
Dysprosium-157
1,000
Lutetium-177
100
Dysprosium-159
100
Lutetium-178m
1,000
Dysprosium-165
1,000
Lutetium-178
1,000
Dysprosium-166
100
Lutetium-179
1,000
Holmium-155
1,000
Hafnium-170
100
Holmium-157
1,000
Hafnium-172
1
Holmium-159
1,000
Hafnium-173
1,000
Holmium-161
1,000
Hafnium-175
100
Holmium-162m
1,000
Hafnium-177m
1,000
Holmium-162
1,000
Hafnium-178m
0.1
Holmium-164m
1,000
Hafnium-179m
10
Holmium-164
1,000
Hafnium-180m
1,000
Holmium-166m
1
Hafnium-181
10
Holmium-166
100
Hafnium-182m
1,000
Holmium-167
1,000
Hafnium-182
0.1
Erbium-161
1,000
Hafnium-183
1,000
Erbium-165
1,000
Hafnium-184
100
Erbium-169
100
Tantalum-172
1,000
Erbium-171
100
Tantalum-173
1,000
Erbium-172
100
Tantalum-174
1,000
Thulium-162
1,000
Tantalum-175
1,000
Thulium-166
100
Tantalum-176
100
Thulium-167
100
Tantalum-177
1,000
Thulium-170
10
Tantalum-178
1,000
Thulium-171
10
Tantalum-179
100
Thulium-172
100
Tantalum-180m
1,000
Thulium-173
100
Tantalum-180
100
Thulium-175
1,000
Tantalum-182m
1,000
Ytterbium-162
1,000
Tantalum-182
10
Ytterbium-166
100
Tantalum-183
100
Tantalum-184
100
Tantalum-185
1,000
Tantalum-186
1,000
Iridium-195m
1,000
Tungsten-176
1,000
Iridium-195
1,000
Tungsten-177
1,000
Platinum-186
1,000
Tungsten-178
1,000
Platinum-188
100
Tungsten-179
1,000
Platinum-189
1,000
Tungsten-181
1,000
Platinum-191
100
Tungsten-185
100
Platinum-193m
100
Tungsten-187
100
Platinum-193
1,000
Tungsten-188
10
Platinum-195m
100
Rhenium-177
1,000
Platinum-197m
1,000
Rhenium-178
1,000
Platinum-197
100
Rhenium-181
1,000
Platinum-199
1,000
Rhenium-182 (12.7h)
1,000
Platinum-200
100
Rhenium-182 (64.Oh)
100
Gold-193
1,000
Rhenium-184m
10
Gold-194
100
Rhenium-184
100
Gold-195
10
Rhenium-186m
10
Gold-198m
100
Rhenium-186
100
Gold-198
100
Rhenium-187
1,000
Gold-199
100
Rhenium-188m
1,000
Gold-200m
100
Rhenium-188
100
Gold-200
1,000
Rhenium-189
100
Gold-201
1,000
Osmium-180
1,000
Mercury-193m
100
Osmium-181
1,000
Mercury-193
1,000
Osmium-182
100
Mercury-194
1
Osmium-185
100
Mercury-195m
100
Osmium-189m
1,000
Mercury-195
1,000
Osmium-191m
1,000
Mercury-197m
100
Osmium-191
100
Mercury-197
1,000
Osmium-193
100
Mercury-199m
1,000
Osmium-194
1
Mercury-203
100
Iridium-182
1,000
Thallium-194m
1,000
Iridium-184
1,000
Thallium-194
1,000
Iridium-185
1,000
Thallium-195
1,000
Iridium-186
100
Thallium-197
1,000
Iridium-187
1,000
Thallium-198m
1,000
Iridium-188
100
Thallium-198
1,000
Iridium-189
100
Thallium-199
1,000
Iridium-190m
1,000
Thallium-200
1,000
Iridium-190
100
Thallium-201
1,000
Iridium-192 (73.8d)
1
Thallium-202
100
Iridium-192m (1.4m)
10
Thallium-204
100
Iridium-194m
10
Lead-195m
1,000
Iridium-194
100
Lead-198
1,000
Lead-199
1,000
Thorium-226
10
Lead-200
100
Thorium-227
0.01
Lead-201
1,000
Thorium-228
0.001
Lead-202m
1,000
Thorium-229
0.001
Lead-202
10
Thorium-230
0.001
Lead-203
1,000
Thorium-231
100
Lead-205
100
Thorium-232
100
Lead-209
1,000
Thorium-234
10
Lead-210
0.01
Thorium-natural
100
Lead-211
100
Protactinium-227
10
Lead-212
1
Protactinium-228
1
Lead-214
100
Protactinium-230
0.1
Bismuth-200
1,000
Protactinium-231
0.001
Bismuth-201
1,000
Protactinium-232
1
Bismuth-202
1,000
Protactinium-233
100
Bismuth-203
100
Protactinium-234
100
Bismuth-205
100
Uranium-230
0.01
Bismuth-206
100
Uranium-231
100
Bismuth-207
10
Uranium-232
0.001
Bismuth-210m
0.1
Uranium-233
0.001
Bismuth-210
1
Uranium-234
0.001
Bismuth-212
10
Uranium-235
0.001
Bismuth-213
10
Uranium-236
0.001
Bismuth-214
100
Uranium-237
100
Polonium-203
1,000
Uranium-238
100
Polonium-205
1,000
Uranium-239
1,000
Polonium-207
1,000
Uranium-240
100
Polonium-210
0.1
Uranium-natural
100
Astatine-207
100
Neptunium-232
100
Astatine-211
10
Neptunium-233
1,000
Radon-220
1
Neptunium-234
100
Radon-222
1
Neptunium-235
100
Francium-222
100
Neptunium-236 (1.15E+5)
0.001
Francium-223
100
Neptunium-236 (22.5h)
1
Radium-223
0.1
Neptunium-237
0.001
Radium-224
0.1
Neptunium-238
10
Radium-225
0.1
Neptunium-239
100
Radium-226
0.1
Neptunium-240
1,000
Radium-227
1,000
Plutonium-234
10
Radium-228
0.1
Plutonium-235
1,000
Actinium-224
1
Plutonium-236
0.001
Actinium-225
0.01
Plutonium-237
100
Actinium-226
0.1
Actinium-227
0.001
Actinium-228
1
Plutonium-238
0.001
Curium-247
0.001
Plutonium-239
0.001
Curium-248
0.001
Plutonium-240
0.001
Curium-249
1,000
Plutonium-241
0.01
Berkelium-245
100
Plutonium-242
0.001
Berkelium-246
100
Plutonium-243
1,000
Berkelium-247
0.001
Plutonium-244
0.001
Berkelium-249
0.1
Plutonium-245
100
Berkelium-250
10
Americium-237
1,000
Californium-244
100
Americium-238
100
Californium-246
1
Americium-239
1,000
Californium-248
0.01
Americium-240
100
Californium-249
0.001
Americium-241
0.001
Californium-250
0.001
Americium-242m
0.001
Californium-251
0.001
Americium-242
10
Californium-252
0.001
Americium-243
0.001
Californium-253
0.1
Americium-244m
100
Californium-254
0.001
Americium-244
10
Einsteinium-250
100
Americium-245
1,000
Einsteinium-251
100
Americium-246m
1,000
Einsteinium-253
0.1
Americium-246
1,000
Einsteinium-254m
1
Curium-238
100
Einsteinium-254
0.01
Curium-240
0.1
Fermium-252
1
Curium-241
1
Fermium-253
1
Curium-242
0.01
Fermium-254
10
Curium-243
0.001
Fermium-255
1
Curium-244
0.001
Fermium-257
0.01
Curium-245
0.001
Mendelevium-257
10
Curium-246
0.001
Mendelevium-258
0.01
Any alpha-emitting radionuclide not listed above or
								mixtures of alpha emitters of unknown composition
0.001
Any radionuclide other than alpha-emitting
								radionuclides not listed above, or mixtures of beta emitters of unknown
								composition
0.01
NOTE: For purposes of D.1902(e), D.1905(a), and D.2201(a)
					 where there is involved a combination of radionuclides in known amounts, the
					 limit for the combination shall be derived as follows: determine, for each
					 radionuclide in the combination, the ratio between the quantity present in the
					 combination and the limit otherwise established for the specific radionuclide
					 when not in combination. The sum of such ratios for all radionuclides in the
					 combination may not exceed "1" -- that is, unity.
1 The quantities listed above
					 were derived by taking 1/10th of the most restrictive ALI listed in Table I,
					 Columns 1 and 2, of Appendix B to Part D, rounding to the nearest factor of 10,
					 and constraining the values listed between 37 Bq and 37 MBq (0.001 and 1,000
					 µCi). Values of 3.7 MBq (100 µCi) have been assigned for
					 radionuclides having a radioactive half- life in excess of E+9 years, except
					 rhenium, 37 MBq (1,000 µCi), to take into account their low specific
					 activity.