Radioactive isotopes are drop-shipped from a different location and can not be returned or refunded.
Shopping cart may not calculate shipping cost for radioactive isotopes correctly. If so, you will be contacted and charged additional shipping costs before order is processed.
For Domestic and international source orders - Activities of gamma emmitters over 5 to 10 μCi MAY require lead shielding, either LSD1, LSD4, or LSD5. If required, the lead shield and appropriate price will be added to your order.
For UPS Next Day, 2nd Day, and 3 Day select please contact us for pricing.
All orders for radioactive materials will be confirmed by a secondary email within 3 business days.
License Free

All our radioactive isotopes and sources are legal to purchase and own by the general public. See NRC Regulations.
Sample radioactive sources are for testing the functionality of a Geiger
counter and for performing experiments involving radioactivity.
These are safe, uncalibrated solid sealed sources. They are fabricated by depositing a license exempt quantity of radioactive material in the well of a 1-inch diameter (25mm) by 1/8-inch thick (3mm) plastic disk.
The well is filled with an epoxy sealing the radioactive material inside the source.
Contains (+/-) 20% of the stated activity and are routinely compared to calibrated reference standards. Each disk is identified by radio nuclide, amount of activity, and production date (month/year). The words "Caution - Radioactive Material" appear on the label of each source.
Radioactive Sources
* Certain Radioactive isotopes require the purchase of an LSD shield *
International customers must order from:
International Radioactive Sources Page
Description |
Primary Radiation Type |
Half-Life |
Activity |
Item# |
Price |
---|---|---|---|---|---|
Barium-133
|
Gamma (γ)
|
10.7 years
|
0.1 uCi
|
BA-133-0.1
|
$86.95
|
|
|
1 uCi
|
BA-133-1
|
$86.95
|
|
Secondary Radiation Type
|
Energies KeV
|
5 uCi
|
BA-133-5
|
$155.75
|
|
N/A
|
81.0, 276.3, 303.7, 355.9, 383.7
|
10 uCi
|
BA-133-10
|
$238.00
|
Description |
Primary Radiation Type |
Half-Life |
Activity |
Item# |
Price |
---|---|---|---|---|---|
Cesium-137
|
Gamma (γ) & Beta (β)
|
30.1 years
|
0.25 uCi
|
CS-137-0.25
|
$86.95
|
Secondary Radiation Type
|
Energies KeV
|
0.5 uCi
|
CS-137-0.5
|
$86.95
|
|
Multiple Radiation Types:
(γ) & (β)
|
γ: 32, 661.6
β: 511.6, 1173.2 |
1 uCi
|
CS-137-1
|
$86.95
|
|
5 uCi |
CS-137-5 |
$155.75 |
|||
10 uCi |
CS-137-10 |
$238.00 |
Description |
Primary Radiation Type |
Half-Life |
Activity |
Item# |
Price |
---|---|---|---|---|---|
Cadmium-109
|
Gamma (γ)
|
465 days
|
1 uCi
|
CD-109-1
|
$86.95
|
Secondary Radiation Type
|
Energies KeV
|
5 uCi
|
CD-109-5
|
$155.75
|
|
N/A
|
88
|
10 uCi
|
CD-109-10
|
$238.00
|
Description |
Primary Radiation Type |
Half-Life |
Activity |
Item# |
Price |
---|---|---|---|---|---|
Cobalt-57
|
Gamma (γ)
|
271 days
|
1 uCi
|
CO-57-1
|
$86.95
|
Secondary Radiation Type
|
Energies KeV
|
5 uCi
|
CO-57-5
|
$155.75
|
|
Beta (+β) 19 keV
|
122.1, 136.4
|
10 uCi
|
CO-57-10
|
$238.00
|
|
25 uCi |
CO-57-25 |
$313.25 |
|||
50 uCi |
CO-57-50 |
$462.00 |
|||
100 uCi |
CO-57-100 |
$759.50 |
Description |
Primary Radiation Type |
Half-Life |
Activity |
Item# |
Price |
---|---|---|---|---|---|
Cobalt-60
|
Gamma (γ)
|
5.27 years
|
1 uCi
|
CO-60-1
|
$86.95
|
Secondary Radiation Type
|
Energies KeV
|
||||
Beta (β) 317.9
|
γ: 1173.2, 1332.5
β: 317.9 |
Description |
Primary Radiation Type |
Half-Life |
Activity |
Item# |
Price |
---|---|---|---|---|---|
Europium-152
|
Gamma (γ) & Beta (β)
|
13.516 years
|
1 uCi
|
EU-152-1
|
$155.75
|
Secondary Radiation Type
|
Energies KeV
|
||||
N/A
|
Description |
Primary Radiation Type |
Half-Life |
Activity |
Item# |
Price |
---|---|---|---|---|---|
Sodium-22
|
Gamma (γ)
|
2.6 years
|
1 uCi
|
NA-22-1
|
$86.95
|
Secondary Radiation Type
|
Energies KeV
|
5 uCi
|
NA-22-5
|
$155.75
|
|
Beta (+β) 546 keV
|
511.0, 1274.5
|
10 uCi
|
NA-22-10
|
$238.00
|
Description |
Primary Radiation Type |
Half-Life |
Activity |
Item# |
Price |
---|---|---|---|---|---|
Polonium-210
|
Alpha (α)
|
138 days
|
0.05 uCi
|
PO-210-0.05
|
$86.95
|
Secondary Radiation Type
|
Energies KeV
|
0.1 uCi
|
PO-210-0.1
|
$86.95
|
|
N/A
|
5304.5
|
Description |
Primary Radiation Type |
Half-Life |
Activity |
Item# |
Price |
---|---|---|---|---|---|
Tin-113
|
Beta (β)
|
115 days
|
1 uCi
|
SN-113-1
|
$297.50
|
Secondary Radiation Type
|
Energies KeV
|
||||
Gamma (γ)
|
644, 31
|
Description |
Primary Radiation Type |
Half-Life |
Activity |
Item# |
Price |
---|---|---|---|---|---|
Strontium-90
|
Beta (β)
|
28.5 years
|
0.1 uCi
|
SR-90-0.1
|
$86.95
|
Secondary Radiation Type
|
Energies KeV
|
||||
N/A
|
546
|
Description |
Primary Radiation Type |
Half-Life |
Activity |
Item# |
Price |
---|---|---|---|---|---|
Thallium-204
|
Beta (β-)
|
3.78 years
|
0.25 uCi
|
TL-204-0.25
|
$86.95
|
1 uCi
|
TL-204-1
|
$86.95
|
|||
Secondary Radiation Type
|
Energies KeV
|
5 uCi
|
TL-204-5
|
$155.75
|
|
N/A
|
763.7
|
10 uCi
|
TL-204-10
|
$238.00
|
Description |
Primary Radiation Type |
Half-Life |
Activity |
Item# |
Price |
---|---|---|---|---|---|
Zinc-65
|
Gamma (γ) & Beta (β)
|
244 days
|
1 uCi
|
ZN-65-1
|
$86.95
|
Secondary Radiation Type
|
Energies KeV
|
||||
Beta (β)
|
γ: 1115.6
β: 236.34, 1351.9 |
Laminated Mylar Window Sources
Description |
Primary Radiation Type |
Half-Life |
Activity |
Item# |
Price |
---|---|---|---|---|---|
Carbon-14
|
Beta (β)
|
5730 years
|
1 uCi
|
LMW-C14-1
|
$125.80
|
Secondary Radiation Type
|
Energies KeV
|
10 uCi
|
LMW-C14-10
|
$283.05
|
|
N/A
|
β156.5
|
Description |
Primary Radiation Type |
Half-Life |
Activity |
Item# |
Price |
---|---|---|---|---|---|
Iron-55
|
X-Ray & K-Beta (β)
|
2.73 years
|
10
|
LMW-FE-55-10
|
$283.05
|
Secondary Radiation Type
|
Energies KeV
|
25 uCi
|
LMW-FE-55-25
|
$362.60
|
|
N/A
|
X-ray: 5.9, 6.5
β: 231.4 |
50 uCi
|
LMW-FE-55-50
|
$440.30
|
|
100 uCi |
LMW-FE-55-100 |
$597.55 |
Description |
Primary Radiation Type |
Half-Life |
Activity |
Item# |
Price |
---|---|---|---|---|---|
Polonium-210
|
Alpha (α)
|
138 days
|
0.1 uCi
|
LMW-PO-210-0.1
|
$125.80
|
Secondary Radiation Type
|
Energies KeV
|
||||
N/A
|
5304.5
|
Source Certificates
Several types of source certificates are available for an additional fee. All certificates must be ordered at the same time the source is ordered.
Certificate of Origin: Certifies that the product is manufactured in Oak Ridge Tennessee, Anderson County United States of America.
SC-O - $55.00
Source Certificate of Origin
Certificate of Compliance: Certifies that the source is in compliance with the US NRC and DOT regulation and that the surface has been wipe tested.
SC-Compliance - $25.00
Source Certificate of Compliance
Certificate of Calibration: Certifies that the source has been calibrated, list intensity, emission and uncertainty. (Only available for Gamma sources.)
SC-Calibration - $157.00
Source Certificate of Calibration
Alpha Particle Radioactive Source
Description | Activity | Half-Life | Item# | Price |
---|---|---|---|---|
Polonium-210
|
250 uCi
|
138 days
|
PO-210-250
|
$184.95
|
500 uCi
|
138 days
|
PO-210-500
|
$274.95
|
|
Primary Radiation Type
|
Energies KeV
|
Secondary Radiation Type(s)
|
||
Alpha (a)
|
5304.5
|
N/A
|


250 uCi Alpha Source 500 uCi Alpha Source
Alpha Particle Source Information
* NY and CA residents are responsible for sales tax on this item, you will be contacted for charge.* Not available for export
* All Radioisotope & Uranium Ore orders are shipped via EMS. Except orders going to Canada, which are shipped FedEx Economy. Call or email for pricing.
PO-210-250 - $184.95
Polonium 210 250 u Ci Source
PO-210-500 - $274.95
Polonium 210 500 uCi Source
Cloud Chamber/Spinthariscope Needle Sources
These sources are used for viewing radioactive particle trails in a cloud chamber or spinthariscopes.
The needle sources are mounted in stoppers. The activity is deposited on the ends of the needles. Rubber stoppers fit into the ends of plastic test tubes for safe, convenient storage.
PB-210 Needle Cloud Chamber Source Contains Pb-210 < 0.01 uCi Lead-210 Needle Source Emits both Alpha and Beta radiation for a variety of experiments. Long half-life of over 20 years.
PO-210 Needle Cloud Chamber Source Contains Polonium-210 (< 0.01 uCi, Po-210) Needle Source Emits strong Alpha radiation (particles) and produces thick condensation trails.
SR-90 Needle Cloud Chamber Source Contains (< 0.01 uCi, Sr-90) Needle Source
Emits strong beta radiation.
* All Radioisotope & Uranium Ore International orders are shipped via EMS. Except orders going to Canada, which are shipped FedEx Economy. Call or email for pricing.
*Shipping Prices are for ground shipments only. Call or email for all other services.
NS-PB-210 - $67.95
NS-PO-210 - $67.95
NS-SR-90 - $67.95
Radioactive Source Sets

Sample radioactive sources for testing the functionality of a Geiger counter. Safe, uncalibrated solid sealed sources are fabricated by depositing a license exempt quantity of activity in the well of a 1-inch diameter (25mm) by 1/8-inch thick (3mm) plastic disk. After drying, the well is filled with an epoxy material; sealing the radioactivity inside the source. Contains 20% of the stated activity and are routinely compared to calibrated reference standards. Each disk is identified by radio nuclide, amount of activity, serial number and calibration date. The words "Caution - Radioactive Material" appear on the label of each source.
These radioactive sources are dropped shipped from separate location.
* All Radioisotope & Uranium Ore International orders are shipped via EMS. Except orders going to Canada, which are shipped FedEx Economy. Call or email for pricing.
*Shipping Prices are for ground shipments only. Call or email for all other services.
This set is used for determining the resolving time of GM Counters. It consists of three half discs, two of which contain 5 microcuries of Tl-204 plus a third half disc with no activity. The count-rate of each half disc plus the blank (to maintain constant geometry) is measured and then both active half discs are combined for a measurement with high count-rate. The counting loss may now be calculated by adding the rates from each half disc and comparing the result to the count-rate with both halves combined.
S-6 - $313.25

The S-7 contains 3 sources emitting a range of alpha, beta and gamma radiation. This set is ideal for demonstration and introductory nuclear labs covering basic characteristics of radiation.
Includes
(1) Po-210 0.1uCi
(1) Sr-90 0.1uCi
(1) Co-60 1uCi
S-7 - $245.00

The S-9 provides a wide range of alpha, beta and gamma emissions making it a popular choice for nuclear science instruction The set contains two beta emitters, two beta/gamma emitters and one alpha source for in-depth studies of radiation.
Includes
(1) Po-210 0.1uCi
(1) Sr-90 0.1uCi
(1) Co-60 1uCi
(1) Tl-204 1uCi
(1) Cs-137 5uCi
S-9 - $483.00

Designed for gamma spectroscopy, the S-10 contains eight different gamma emitting isotopes covering the entire energy range from 32 to 1333 keV. Also included in the set is a mixed source of Cs-137 and Zn-65 which students may use to identify an unknown isotope.
Includes
(1) Ba-133 1uCi
(1) Cd-109 1uCi
(1) Co-57 1uCi
(1) Co-60 1uCi
(1) Cs-137 1uCi
(1) Mn-54 1uCi
(1) Na-22 1uCi
(1) Cs/Zn mixed source (0.5uCi Cs-137 & 1uCi Zn-65)
S-10 - $654.50
Uranium Ore

Useful for testing Geiger Counters.
License exempt.
Uranium ore sample sizes vary.
Shipped in labeled metal container as shown.
Container size approximately 1-3/4" height 2-1/2" diameter.
Uranium ore samples may contain one or more several other minerals such as
Tyuyamunite (green/yellow)
Uraninite (Black ,Crystalline)
Pitchblade (Black)
Carnotite (Green/Yellow, Lemon-Yellow)
Uranophane (Bright Yellow) and/or Gummite (Orange-Brown)
Each uranium ore specimen is radioactive and measured with a NRC certified GCA-07W Digital Geiger Counter. Activity of alpha, beta and gamma in Counts Per Minute (CPM) is provided along with measurement certification. Uranium Ore samples typically have one area that is more radioactive than other areas. Measurement of radioactivity is taken from the most radioactive portion of the sample. CPM is total radiation read from sample.
Shipping Information:
*Shipping Only Available Within The Contiguous United States
We are always in compliance with Section 13 from part 40 of the NRC Nuclear Regulatory Commission rules and regulations and Postal Service regulations specified in 49 CFR 173.421 for activity limits of low level radioactive materials. Item will be shipped in accordance with Postal Service activity limits specified in Publication 52.
Radioactive minerals are for educational and scientific use only.
Sale of uranium ore is in compliance with all U.S. Federal
regulations (Part 40) and NY State Regulations (10 NYCRR Part 16 and 12 NYCRR Part 38) as defined
under Appendix A exemptions.
UR-01 - $49.95 Uranium Ore (500 CPM - 1,000 CPM)
UR-02 - $84.95 Uranium Ore (1000 CPM - 2,000 CPM)
UR-03 - $129.95 Uranium Ore (High - Over 3,000 CPM)
UR-04 - $174.95 Uranium Ore (Extra-High over 10,000 CPM)
Make Selection Of Uranium Ore
Lead Shielded Disc Source Containers
More Radioactive Source Containers HERE
LSD1
For 1-2 sources of >5 uCi, the LSD1 Lead Shield simplifies shipping problems and offers ultra-safe storage of sources. Now painted on both sides for safety.
LSD1 - $56.00
Lead Shielded Disc Container (Capacity 1 disc)
LSD4 For 1-8 sources, the LSD4 simplifies both shipment, and storage of your disk sources. Painted on both sides for safety, an entire set of eight sources will fit inside the LSD4
LSD4 - $70.00
Lead Shielded Disc Container (Capacity 8 discs)
LSD5
With a wall thickness of 0.5", this LSD5 lead shield container is suitable for higher activity sources. Holds up to 20 1" discs. Outside Dimensions: 3.6" x 2.25", Interior Dimensions: 2.65" X 1.25", 0.5" thick, approximately 4.6 lbs weight, painted exterior.
LSD5 - $91.00
Lead Shielded Disc Container (Capacity 20 discs)
Lead Pig (Refurbished)

Plastic shelled lead storage containers for radioactive material,
known in the industry as 'Pigs', The internal container is a solid cast
lead container fabricated for nuclear material containment. Safely store
your uranium ore, radioactive Isotopes, and other radioactive samples.
The plastic shell protects you from physically touching lead, which
is a toxic metal. Click on "More Pictures" below to see open
view of container.
Our Pig includes a laminated label that you can record the contents.
Lead Shielding Guide
More Pictures
Outer Dimensions (approximate)
2.25"(diameter) x 3.5"(height)
Inner Dimensions (approximate)
1.1"(inside diameter) x 2.4"(inside depth)
Weight (approximate): 2 lbs.-1 oz.
Lead Thickness (approximate): 0.25"
Lead Pig