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205.4 - Radioactive Solutions

These SRMs are intended for the calibration of radioactivity measuring instruments and for the monitoring of chemical and geochemical processes. They are calibrated in terms of activity per gram of solution. Each SRM is contained in a flame-sealed glass ampoule or bottle and, except as noted, consists of the radionuclide dissolved in an aqueous solution (usually acidic).

When an import permit for radioactive material is required of a customer outside the U.S., NIST must have a copy to complete an order and facilitate shipment.

"Radionuclide Calibration Services"

"Radioactive SRM Purchasing Instructions & License Certification Form"

"Radioactive SRMs-General Info"

PLEASE NOTE: The tables are presented to facilitate comparisons among a family of materials to help customers select the best SRM for their needs. For specific values and uncertainties, the certificate is the only official source.


- Certified values are normal font
- Reference values are italicized
- Values in parentheses are for information only


Detail - Detail    Certificate - Certificate    Report of Investigation - Report of Investigation    MSDS - MSDS    Data Files - Data Files    Questionaire - Questionnaire


  SRM Description Unit of Issue     Approx.
Massic
Activity (Bq/g)
Chemical Form
Decay Modes
NRC License or
Equivalent
Required*
Reference Time 
(month/year)

 


Detail Certificate MSDS 4222d
Now Selling
Carbon-14-n-hexadecane Radioactivity Standard 5 mL   54,000 n-hexadecane β- -- 09/14
Detail Certificate MSDS 4226D
Now Selling
Nickel-63 Radioactivity Standard
5 mL   85 000 NiCl2 β- X 11/09
Detail Certificate MSDS 4233f
Now Selling
Cesium-137 Radioactivity Standard 5 mL   221 100 CsCl β- X 08/18
Detail Certificate MSDS 4239
Out of Stock
Strontium-90 Radioactivity Standard Solution 5 mL   32 000 SrCl2 β - X 12/06
Detail Certificate MSDS 4251d
Now Selling
Barium-133 Radioactivity Standard 5 mL   382 600 BaCl2 EC X 07/18
Detail Certificate MSDS 4274
Now Selling
Holmium-166m Gamma-ray Emission Rate Standard
5 mL   20 000 HoCl3 γ X 02/06
Detail Certificate MSDS 4288B
Now Selling
Technetium-99 Radioactivity Standard
5 mL   30 000 KTcO4 β -- 05/08
Detail Certificate MSDS 4320b
Now Selling
Curium-244 Radioactivity Standard 5 mL   35 Cm(NO3)3 α X 09/11
Detail Certificate MSDS 4321d
Now Selling
Natural Uranium Radioactivity Standard 5 mL   250 UO2(NO3)2 α X 03/17
Detail Certificate MSDS 4322d
Out of Stock
Americium-241 Radioactivity Standard 5 mL   134 Am(NO3)3 α X 3/19
Detail Certificate MSDS 4323c
Now Selling
Plutonium-238 Radioactivity Standard 5 mL   23 Pu(NO3)6 α X 10/16
Detail Certificate MSDS 4324B
Out of Stock
Uranium-232 Radioactivity Standard Solution 5 mL   30 UO2(NO3)2 α X 7/02
Detail Certificate MSDS 4326a
Now Selling
Polonium-209 Radioactivity Standard 5 mL   39** PoCl4 α, EC X 12/13
Detail Certificate MSDS 4328C
Now Selling
Thorium-229 Radioactivity Standard 5 mL   35 Th(NO3)4 α X 12/07
Detail Certificate MSDS 4329a
Now Selling
Curium-243 Radioactivity Standard 5 mL   31
Cm(NO3)3

α X 05/19
Detail Certificate MSDS 4330C
Now Selling
Plutonium-239 Radioactivity Standard
3 mL   40 Pu(NO3)6 α X 05/09
Detail Certificate MSDS 4332E
Now Selling
Americium-243 Radioactivity Standard
5 mL   40 Am(NO3)3 α X 10/08
Detail Certificate MSDS 4334j
Now Selling
Plutonium-242 Radioactivity Standard 5 mL   26 Pu(NO3)6 α X 08/17
Detail Certificate MSDS 4337
Now Selling
Lead-210 Radioactivity Standard
5 mL   9 000 Pb(NO3)2 β - X 06/06
Detail Certificate MSDS 4338A
Out of Stock
Plutonium-240 Radioactivity Standard Solution 5 mL   40 Pu(NO3)6 α X 05/96
Detail Certificate MSDS 4339b
Now Selling
Radium-228 Radioactivity Solution 5 mL   200 Ra(NO3)2 β -
X 10/10
Detail Certificate MSDS 4340B
Now Selling
Plutonium-241 Radioactivity Standard
5 mL   250 Pu(NO3)6 β - X 06/07
Detail Certificate MSDS 4341a
Now Selling
Neptunium-237 Radioactivity Standard 5 mL   150 Np(NO3)5 α X 09/12
Detail Certificate MSDS 4342A
Now Selling
Thorium-230 Radioactivity Standard
5 mL   40 Th(NO3)4 α X 04/07
Detail Certificate MSDS 4361C
Now Selling
Hydrogen-3 Radioactivity Standard 500 mL   2 H2O β - -- 09/98
Detail Certificate MSDS 4370d
Now Selling
Europium-152 Radioactivity Standard 5 mL   18 700 EuCl3 β -,EC,γ X 7/18
Detail Certificate MSDS 4915F
Now Selling
Cobalt-60 Radioactivity Standard Solution 5 mL   60 000 CoCl2 β - X 11/05
Detail Certificate MSDS 4919I
Now Selling
Strontium-90 Radioactivity Standard
5 mL   4 200 SrCl2 β - X 12/06
Detail Certificate MSDS 4926E
Now Selling
Hydrogen-3 Radioactivity Standard 20 mL   5 000 H2O β - -- 09/98
Detail Certificate MSDS 4927g
Now Selling
Hydrogen-3 Radioactivity Standard 5 mL   540 000 H2O β- -- 05/15
Detail Certificate MSDS 4929F
Now Selling
Iron-55 Radioactivity Standard
5 mL   59 000 FeCl3 EC, β - -- 11/05
Detail Certificate MSDS 4943
Out of Stock
Chlorine-36 Radioactivity Standard
3 mL   10 000 NaCl β - -- 12/84
Detail Certificate MSDS 4949d
Now Selling
Iodine-129 Radioactivity Standard
5 mL   2 700 Nal β- X 01/14
Detail Certificate MSDS 4965a
Now Selling
Radium-226 Radioactivity Standard 5 mL   30 RaCl2 α, γ
X 01/07
Detail Certificate MSDS 4966A
Now Selling
Radium-226 Radioactivity Standard
5 mL   290 RaCl2 α, γ X 01/07
Detail Certificate MSDS 4967A
Now Selling
Radium-226 Radioactivity Standard Solution 5 mL   2 500 RaCl2 α, γ X 09/03
Detail Certificate MSDS 4969
Now Selling
Radium-226 Radioactivity Standard
5 mL   3 RaCl2 α, γ X 09/98

- Certified values are normal font
- Reference values are italicized
- Values in parentheses are for information only

*If no "X", then license is not required unless the institution possesses a specific license that covers the listed radionuclide.
**Value for Approximate Massic Activity for SRM 4326a is expressed as s-1•g-1.