Check sources (not calibrated, nominal)
The products shown on these pages are representative sources used for common applications. If you cannot find the product with your specifications, please contact us using the corresponding email contact on this website. In most cases we will be able provide you with a solution meeting your requirements. You can also use our product request forms.
General information
This section shows single or mixed radionuclide sources which have been developed to check the correct functioning of radiation measurement equipment such as surface contamination monitors, survey dosimeters and personal dosimeters. Stainless steel encapsulated sources are also available for instrument checking and oil well logging devices.If a modified source of this type is required, please send us your specification using the form at the end of this section.
Certification
Each source is supplied with a certificate which states the nominal activity and leakage test results.
Applications
All radiation detection instruments should be checked daily to ensure that they are working correctly. These daily checks are sometimes obligatory under national regulations. The sources in this section offer a cost-effective and convenient method to perform functionality checks on the following types of instrument:
- Portable contamination monitors
- Survey dosimeters
Note: These sources are not calibrated and can only be used for checking that the instrument is operating correctly and is stable.
ISO classification
The International Organization for Standardization has published a classification of sealed sources based on safety requirements of typical usage. The source types have been assessed to ISO2919 which is equivalent to ANSI N542-1977.
Useful working life
Regular improvements in source design mean that it would be good working practice to renew the sources every 10 years. Sources may be cleaned by wiping the surfaces with a lint free cloth with alcohol (detergents or abrasive compounds such as metal polish should not be used).
- Alpha-, beta-, gamma-check sources
- Low energy check sources
- Calibrated sources for oil well logging
- Calibrated Stainless steel encapsulated sources
- Form to request custom source
Back to overview – reference sources
Alpha-, beta-, gamma-check sources
|
Application These sources emit alpha-, beta- and gamma-radiation for checking the operation of surface contamination monitors and survey dosimeters. The advantages are:
|
|
Construction
The source is constructed from 3 active components (drawing: VZ-1444-001). Am-241 is incorporated in the surface of an anodized aluminium foil, and mounted at the top of the source. A Sr-90 foil is constructed in the same way and mounted below the Am-241 foil. An ion-exchange resin bead impregnated with Cs-137 is glued into an inner capsule and mounted under the foils.The casing is constructed from black anodized aluminium and the source is supplied in a lightweight storage case. A plastic cap is supplied to protect the surface of the source when not in use.
Ordering Information
|
Radionuclides |
Nominalactivity [kBq] |
Particleemission rate |
Productcode |
|
Am-241 |
0.8 |
400 alphas/s |
QCRB1282 |
|
Sr-90 |
0.5 |
150 betas/s |
|
|
Cs-137 |
15 |
Gamma radiation |
|
Construction The source is constructed from 3 active components (drawing: VZ-2263-001). Am-241 is incorporated in the surface of an anodized aluminium foil, and mounted at the top of the source. A Sr-90 foil is constructed in the same way and mounted below the Am-241 foil. An ion-exchange resin bead impregnated with Cs-137 is glued into an inner capsule and mounted under the foils. The casing is constructed from aluminium. An aluminium cover screws in place over the source to protect the surface of the source when not in use. |
 |
Ordering Information
|
Radionuclides |
Nominalactivity [kBq] |
Particleemission rate |
Productcode |
|
Am-241 |
0.14 |
70 alphas/s |
QCRB5203 |
|
Sr-90 |
2 |
2200 betas/s |
|
|
Cs-137 |
15 |
Gamma radiation |
|
Construction The Cs-137 activity is incorporated into a ceramic pellet which is mounted in a brass capsule. The head of the capsule has a M8 thread, and a slot for a screwdriver so that the source can be mounted easily into a jig. ISO classification
|
 |
Ordering Information
|
Radionuclides |
Nominalactivity [kBq] |
Particleemission rate |
Productcode |
|
Am-241 |
0.14 |
70 alphas/s |
QCRB5203 |
|
Sr-90 |
2 |
2200 betas/s |
|
|
Cs-137 |
15 |
Gamma radiation |
|
Construction The Cs-137 activity is incorporated into an ion exchange resin bead which is enclosed in a stainless steel capsule sealed into an aluminium holder. The source is supplied with an aluminium shielded container. ISO classification ISO/12/C23312 Drawing: VZ-2297-001 and storage container VZ-2583-001 |
 |
Ordering Information
|
Radionuclide |
Nominal activity [kBq] |
Product code |
|
Cs-137 |
370 |
CDRB18308 |
Low energy check sources
|
Application These sources can be used to check the performance of surface contamination monitors designed for detecting low energy photon-emitting radionuclides such as I-129, Cr-51 etc..The photons emitted by Fe-55 are close in energy to the low energy threshold of these monitors, so a check using an Fe-55 source is a sensitive method to identify any faults with the equipment (eg., drifts in the high voltage applied to the detector). Construction The source consists of an ion exchange resin bead mounted in a solid plastic holder. ISO classification ISO/12/C34343 Drawing: VZ-1240-001 |
 |
Ordering Information
|
Radionuclide |
Nominal activity[MBq] |
Product code |
|
Fe-55 |
1.85 |
IER15510 |
Fe-55 test source and jig for Mini Instruments 44B probe
This source and jig are intended for daily performance checks on Mini Instruments 44B monitors. The jig positions the detector at an accurately reproducible distance from the source so that long term drifts in instrument response can be recorded.
Construction
The Fe-55 active deposit is heat-sealed between two plastic foils which are mounted on an aluminium backing plate. The source is then placed into a robust Teflon jig, with a protective rotating cover.
Ordering Information
|
Radionuclide |
Description |
Nominal activity[kBq] |
Product code |
|
Fe-55 |
Source and jig to drawingsVZ-2044 and VZ-2012 |
70 |
IERB3621 |
|
Fe-55 |
Replacement source todrawing VZ-2044 |
70 |
IERB3748 |
Calibrated sources for oil well logging
Application
These calibrated sources have been designed for routine checking and calibration of radiation detection instrumentation eg.
• Gamma dosemeters• Survey meters• Radiation alarms• Oil well logging devices
High pressure tested sources
Construction
The Cs-137 is fixed in a glass matrix and sealed by welding the glass between two stainless steel discs. This inner capsule is welded into an outer stainless steel capsule. The overall dimensions are 12.7mm diameter x 3.2mm.The active diameter is 5.8mm.These sources meet the requirements for oil well logging sources and each source is pressure tested to 25,000psi.
ISO classification
C.66646
Drawing: VZ-2134
The IDNS model number is CDC.PLS.
Certification
Each source is supplied with a Eckert & Ziegler Nuclitec certificate of measurement.
Ordering Information
|
Radionuclide |
Nominal activity |
Product code |
|
|
[kBq] |
[nCi] |
||
|
Cs-137 |
18,5 |
500 |
CDRB4399 |
|
Cs-137 |
30,0 |
810 |
CDRB5517 |
|
Cs-137 |
59,2 |
1600 |
CDRB4400 |
Calibrated gamma point sources
The activity is in the form of a ceramic disc, fixed with a bronze spring and welded into a stainless steel capsule (drawing VZ-543). In case of drawing VZ-542 this capsule is mounted on a stainless steel disc. The overall dimensions of the capsule are 10mm diameter x 5mm. The dimensions of the stainless steel plate are 32mm diameter x 0.5mm.
ISO classification
ISO/12/C66543
Drawing: VZ-542-001
Certification
VZ-543-001
Each source is supplied with a Eckert & Ziegler Nuclitec certificate of measurement.
Both sources have a Sealed Source Device Registration: CA0406S118S, Source model no. PHI-XXX.
Ordering Information
|
Radionuclide |
Drawing |
Nominal activity[kBq] |
Product code |
|
Am-241 |
VZ-542 |
1850 |
AMRK6140 |
|
Cs-137 |
VZ-542 |
1850 |
CDRK5800 |
|
Cs-137 |
VZ-542 |
33,3 |
CDRQ6986 |
|
Co-60 |
VZ-542 |
555 |
CKRK6141 |
|
Cs-137 |
VZ-543 |
37 |
CDRK4853 |
Calibrated stainless steel encapsulated sources
|
Construction Cs-137 in the form of a ceramic pellet is welded into a stainless steel capsule. The overall dimensions are 6mm diameter x 2mm thick. |
 |
ISO classification
C.65344
Drawing: VZ-2936-001
Certification
Each source is supplied with a Eckert & Ziegler Nuclitec certificate of measurement.
Ordering Information
|
Radionuclide |
Nominal activity[kBq] |
Product code |
|
Cs-137 |
37 |
CDRB3078 |
Calibrated welded Cs-137 gamma point sources
Construction
Cs-137 in the form of a ceramic disc is welded into an inner stainless steel capsule. The inner capsule is mounted into an outer stainless steel capsule. The overall dimensions are 6mm diameter x 8mm.
ISO classification
C.64444
Drawing: VZ-130
The IDNS model number is CDC.P1.
Certification
Each source is supplied with a Eckert & Ziegler Nuclitec certificate of measurement.
Ordering Information
|
Radionuclide |
Nominal activity[kBq] |
Product code |
|
Cs-137 |
37 |
CDRB5947 |
|
Cs-137 |
370 |
CDRB5948 |
|
Cs-137 |
3700 |
CDRB5949 |
Calibrated robust Cs-137 gamma point sources
Construction
Cs-137 in the form of a ceramic pellet is Certification welded into a stainless steel capsule.The overall dimensions are 4.5mm diameter x 6mm long.
ISO classification
C.66445
Drawing: VZ-1145
Certification
Each source is supplied with a Eckert & Ziegler Nuclitec certificate of measurement.
Ordering information
|
Radionuclide |
Nominal activity[kBq] |
Product code |
|
Cs-137 |
37 |
CDRB5952 |
|
Cs-137 |
370 |
CDRB5953 |
|
Cs-137 |
3700 |
CDRB5954 |
Calibrated robust Cs-137 point sources with thread
Construction
Cs-137 in the form of a ceramic disc is welded into an inner stainless steel capsule. The inner capsule is mounted into an outer stainless steel capsule which has an M4 thread on the top of the source. The overall dimensions are 6.4mm diameter x 17.6mm.
ISO classification
C.66646
Drawing: VZ-2733
The special form certificate number is D/0051/S.
Certification
Each source is supplied with a Eckert & Ziegler Nuclitec certificate of measurement.
Ordering information
|
Radionuclide |
Nominal activity[kBq] |
Product code |
|
Cs-137 |
37 |
CDRB5950 |
|
Cs-137 |
370 |
CDRB3542 |
|
Cs-137 |
3700 |
CDRB5951 |
Form to request custom source
Please use this link to request for custom check source