Radiation Detection & Experiments
Radioactive Sources (Domestic USA)
Isotopes, source sets, uranium ore, certificates, and shielded containers.
Ordering & Shipping Information
Radioactive isotopes are drop-shipped from a different location and cannot be returned or refunded.
The Shopping Cart may not calculate shipping costs for radioactive isotopes correctly. If so, you will be contacted and charged additional shipping costs before the order is processed.
For domestic and international source orders, activities of gamma emitters over 5 to 10 µCi may require lead shielding, either LSD1, LSD4, or LSD5. For sources requiring shielding, an LSD1 is automatically added to the shopping cart. We will contact you if a larger shield is more beneficial based on your total order. Images of the shields are provided below for reference.
All radioisotope and uranium ore orders are shipped via USPS. For expedited shipping, 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 epoxy, sealing the radioactive material inside the source.
Sources contain (+/-) 20% of the stated activity and are routinely compared to calibrated reference standards. Each disk is identified by radionuclide, amount of activity, and production date (month/year). The words “Caution - Radioactive Material” appear on the label of each source.
Radioactive Sources
Shielding is automatically added for radioactive isotopes where required.
International customers must order from the International Radioactive Sources Page.
| Description | Primary Radiation Type | Half-Life | Activity | Item# | Price |
|---|---|---|---|---|---|
| Barium-133 | Gamma (?) | 10.7 years | 0.1 uCi | BA-133-0.1 | $98.00 |
| 1 uCi | BA-133-1 | $98.00 | |||
| Secondary Radiation Type | Energies KeV | 5 uCi | BA-133-5 | $178.50 | |
| N/A | 81.0, 276.3, 303.7, 355.9, 383.7 | 10 uCi | BA-133-10 | $267.75 |
| Description | Primary Radiation Type | Half-Life | Activity | Item# | Price |
|---|---|---|---|---|---|
| Cesium-137 | Gamma (?) & Beta (ß) | 30.1 years | 0.25 uCi | CS-137-0.25 | $98.00 |
| Secondary Radiation Type | Energies KeV | 0.5 uCi | CS-137-0.5 | $98.00 | |
| Multiple Radiation Types: (?) & (ß) | ?: 32, 661.6 ß: 511.6, 1173.2 |
1 uCi | CS-137-1 | $98.00 | |
| 5 uCi | CS-137-5 | $178.50 | |||
| 10 uCi | CS-137-10 | $267.75 |
| Description | Primary Radiation Type | Half-Life | Activity | Item# | Price |
|---|---|---|---|---|---|
| Cadmium-109 | Gamma (?) | 465 days | 1 uCi | CD-109-1 | $98.00 |
| Secondary Radiation Type | Energies KeV | 5 uCi | CD-109-5 | $178.50 | |
| N/A | 88 | 10 uCi | CD-109-10 | $267.75 |
| Description | Primary Radiation Type | Half-Life | Activity | Item# | Price |
|---|---|---|---|---|---|
| Cobalt-57 | Gamma (?) | 271 days | 1 uCi | CO-57-1 | $98.00 |
| Secondary Radiation Type | Energies KeV | 5 uCi | CO-57-5 | $178.50 | |
| Beta (+ß) 19 keV | 122.1, 136.4 | 10 uCi | CO-57-10 | $267.75 | |
| 25 uCi | CO-57-25 | $343.00 | |||
| 50 uCi | CO-57-50 | $491.75 | |||
| 100 uCi | CO-57-100 | $789.25 |
| Description | Primary Radiation Type | Half-Life | Activity | Item# | Price |
|---|---|---|---|---|---|
| Cobalt-60 | Gamma (?) | 5.27 years | 1 uCi | CO-60-1 | $98.00 |
| Secondary Radiation Type | Energies KeV | ||||
| Beta (ß) 317.9 | ?: 1173.2, 1332.5 ß: 317.9 |
| Description | Primary Radiation Type | Half-Life | Activity | Item# | Price |
|---|---|---|---|---|---|
| Europium-152 | Gamma (?) & Beta (ß) | 13.516 years | 1 uCi | EU-152-1 | $178.50 |
| Secondary Radiation Type | Energies KeV | ||||
| N/A |
| Description | Primary Radiation Type | Half-Life | Activity | Item# | Price |
|---|---|---|---|---|---|
| Manganese-54 | Gamma (?) & Beta (ß) | 312 days | 1 uCi | MN-54-1 | $119.00 |
| Secondary Radiation Type | Energies KeV | ||||
| Beta (ß) 542.2 | ?: 834.8 ß: 542.2 |
| Description | Primary Radiation Type | Half-Life | Activity | Item# | Price |
|---|---|---|---|---|---|
| Sodium-22 | Gamma (?) | 2.6 years | 1 uCi | NA-22-1 | $98.00 |
| Secondary Radiation Type | Energies KeV | 5 uCi | NA-22-5 | $178.50 | |
| Beta (+ß) 546 keV | 511.0, 1274.5 | 10 uCi | NA-22-10 | $267.75 |
| Description | Primary Radiation Type | Half-Life | Activity | Item# | Price |
|---|---|---|---|---|---|
| Polonium-210 | Alpha (a) | 138 days | 0.05 uCi | PO-210-0.05 | $98.00 |
| Secondary Radiation Type | Energies KeV | 0.1 uCi | PO-210-0.1 | $98.00 | |
| N/A | 5304.5 |
| Description | Primary Radiation Type | Half-Life | Activity | Item# | Price |
|---|---|---|---|---|---|
| Tin-113 | Beta (ß) | 115 days | 1 uCi | SN-113-1 | $98.00 |
| Secondary Radiation Type | Energies KeV | ||||
| Gamma (?) | 644, 31 |
| Description | Primary Radiation Type | Half-Life | Activity | Item# | Price |
|---|---|---|---|---|---|
| Strontium-90 | Beta (ß) | 28.5 years | 0.1 uCi | SR-90-0.1 | $98.00 |
| Secondary Radiation Type | Energies KeV | ||||
| N/A | 546 |
| Description | Primary Radiation Type | Half-Life | Activity | Item# | Price |
|---|---|---|---|---|---|
| Thallium-204 | Beta (ß-) | 3.78 years | 0.25 uCi | TL-204-0.25 | $98.00 |
| 1 uCi | TL-204-1 | $98.00 | |||
| Secondary Radiation Type | Energies KeV | 5 uCi | TL-204-5 | $178.50 | |
| N/A | 763.7 | 10 uCi | TL-204-10 | $267.75 |
| Description | Primary Radiation Type | Half-Life | Activity | Item# | Price |
|---|---|---|---|---|---|
| Zinc-65 | Gamma (?) & Beta (ß) | 244 days | 1 uCi | ZN-65-1 | $98.00 |
| Energies KeV | |||||
| Beta (ß) | ?: 1115.6 ß: 236.34, 1351.9 |
Laminated Mylar Window Sources
| Description | Primary Radiation Type | Half-Life | Activity | Item# | Price |
|---|---|---|---|---|---|
| Carbon-14 | Beta (ß) | 5730 years | 1 uCi | LMW-C14-1 | $130.00 |
| Secondary Radiation Type | Energies KeV | 10 uCi | LMW-C14-10 | $283.75 | |
| N/A | ß156.5 |
| Description | Primary Radiation Type | Half-Life | Activity | Item# | Price |
|---|---|---|---|---|---|
| Iron-55 | X-Ray & K-Beta (ß) | 2.73 years | 10 | LMW-FE-55-10 | $283.75 |
| Secondary Radiation Type | Energies KeV | 25 uCi | LMW-FE-55-25 | $362.60 | |
| N/A | X-ray: 5.9, 6.5 ß: 231.4 |
50 uCi | LMW-FE-55-50 | $491.75 | |
| 100 uCi | LMW-FE-55-100 | $789.25 |
| Description | Primary Radiation Type | Half-Life | Activity | Item# | Price |
|---|---|---|---|---|---|
| Polonium-210 | Alpha (a) | 138 days | 0.1 uCi | LMW-PO-210-0.1 | $130.00 |
| 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.
Certificate of Compliance
Certifies that the source is in compliance with the US NRC and DOT regulations and that the surface has been wipe tested.
Certificate of Calibration
Certifies that the source has been calibrated and lists intensity, emission, and uncertainty. Only available for gamma sources.
Alpha Particle Radioactive Source
| Description | Activity | Half-Life | Item# | Price |
|---|---|---|---|---|
| Polonium-210 | 250 uCi | 138 days | PO-210-250 | $187.10 |
| 500 uCi | 138 days | PO-210-500 | $325.07 | |
| Primary Radiation Type | Energies KeV | Secondary Radiation Type(s) | ||
| Alpha (a) | 5304.5 | N/A | ||
Alpha Particle Source Information
NY, IN, and CA residents are responsible for sales tax on this item. You will be contacted for the charge.
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 and 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.
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 epoxy material, sealing the radioactivity inside the source.
Contains 20% of the stated activity and is routinely compared to calibrated reference standards. Each disk is identified by radionuclide, amount of activity, serial number, and calibration date. The words “Caution - Radioactive Material” appear on the label of each source.
These radioactive sources are drop-shipped from a separate location. International customers must order from the International Radioactive Sources Page.
Shipping prices are for ground shipments only. Call or email for all other services.
RSS2
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.
RSS3
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
RSS5
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
RSS8
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)
Uranium Ore
Useful for testing Geiger counters. License exempt. Uranium ore sample sizes vary. Shipped in a labeled metal container as shown. Container size approximately 1-3/4" height and 2-1/2" diameter.
Uranium ore samples may contain one or more 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 an 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 the 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. Items 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 (300 CPM–1,500 CPM)
- UR-02 — $84.95: Uranium Ore (1,500 CPM–3,000 CPM)
- UR-03 — $134.95: Uranium Ore (High—over 3,000 CPM)
- UR-04 — $189.95: Uranium Ore (Extra-High—over 5,000 CPM)
Lead Shielded Disc Source Containers
Images of LSD shields are for reference only.
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.
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.
LSD-5 — Lead Pig
The LSD-5 Lead Shield is cast lead used to enclose our one-inch diameter disks.
Specifications
- Exterior Dimensions: 2.25" x 3.6"
- Interior Dimensions: 1.25" x 2.65"
- Wall Thickness: 0.5"
- Weight: 4.7 lbs (2.13 kilograms)
The exterior is painted and placed within a vinyl cap.
New lead pig with vinyl shell.
Lead Pig (Refurbished)
More Radioactive Source Containers
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.
Our pig includes a laminated label that you can record the contents on.
Lead Shielding Guide | More Pictures
Approximate Specifications
- Outer dimensions: 2.25" diameter x 3.5" height
- Inner dimensions: 1.1" inside diameter x 2.4" inside depth
- Weight: 2 lbs.–1 oz.
- Lead thickness: 0.25"
LP-01 HW — Lead Pig