Marinelli beakers (inkl. empty beakers)

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

Construction
Mixed or single radionuclide solutions are incorporated homogeneously into a plastic resin which is then poured into the container and allowed to set. The active resin is normally covered by a layer of inactive resin. A lid is fixed to the container to make a sealed, solid source.
Gas equivalent sources are prepared by combining the active solution with plastic foam.

Applications
High resolution gamma-ray spectrometry is widely used for identifying and assaying gamma-ray emitting radionuclides in environmental samples. To meet the requirements of quality management systems, the spectrometers should be calibrated using reference sources that are traceable to national standards. The reference sources must also match as closely as possible the geometry, density and composition of the sample to be assayed. This range of ready-for-use geometry reference sources has been developed to meet these requirements. The advantages of this type of source are:

  • No source preparation needed -saves time and resources
  • No dilution of solutions needed -calibration is directly traceable to national standards
  • No dispensing of strong acids for dilution is needed -source is safer to handle
  • Sealed source -no risk of contaminating sensitive equipment
  • Stable source -will not deteriorate over time
  • Source checked for homogeneity -consistent, accurate, results year after year
  • Matches closely the samples to be measured -can be prepared in your own container (see page 87) with a wide range of densities from gas equivalent (0.02g/cm3) to cement (3g/cm3)
  • Layout of certificate of calibration matches the requirements of commercial gamma ray spectrometry software - calibration easy and quick to carry out
  • Wide range of commonly used beakers or bottles available -short delivery times
  • Custom geometry -to meet your special requirements (please allow longer delivery times)

Measurement
For mixed radionuclide reference sources, each radionuclide is assayed individually using a method which is traceable to national standards. The mixed solution is then prepared, and checked by high resolution gamma-ray spectrometry. The solid reference source is then manufactured using the mixed radionuclide solution, and the final source is checked again for accuracy and homogeneity by high resolution gamma-ray spectrometry.

Quality assurance
The sources are calibrated at Eckert & Ziegler Nuclitec´s DKD accredited measurement laboratory in Germany. The manufacturing facility operates a quality management system which has been independently audited and approved to ISO9001:1994.

Uncertainties
The reported uncertainty is based on a standard uncertainty multiplied by a coverage factor k=2, providing a level of confidence of approximately 95%.

Traceability
The sources are traceable to standards held by national laboratories such as the Physikalisch-Technische Bundesanstalt (Germany), the National Physical Laboratory (UK), the National Institute of Standards and Technology (USA), the Laboratoire Primaire des Rayonnements Ionisants (France), and many other national laboratories world-wide.

Certification
Each source listed in this section is supplied with a DAkkS certificate of calibration which states:

  • Reference time and date
  • Activity of main radionuclides and/or gamma-ray emission rates of main gamma-energies
  • Activity of any gamma-ray emitting impurities detected
  • Serial number
  • Results and date of leakage test

Radionuclidic purity
Gamma-ray emitting impurities are determined by high resolution gamma-ray spectrometry of each individual radionuclide in the mixture. The final mixture is checked for cross-contamination. In addition to the main gamma rays shown on the certificate, several low intensity gamma-ray peaks may be observed in the spectrum. The most significant are listed in the table below.

Spectrum notes

Energy [keV]

Origin

1325

Escape peak from 1836 keV peak of Y-88

814

Double escape peak from 1836 keV peak of Y-88

511

Annihilation radiation from positron decay of Y-88
(may not be resolved from the 514 keV peak from Sr-85)

225

From decay of Sn-113

136

From decay of Co-57

80 - 90

X-rays from decay of Hg-203

2506

Sum peak from Co-60 decay (1173-1333 keV)

2734

From decay of Y-88


Recommendations on source storage and replacement

Regular improvements in source design and measurement mean that it would be good working practice to renew the sources within 10 years. For many sources, the useful working life is limited by the half life of the radionuclides. The sources should be kept out of direct sunlight and away from other sources of direct heat, to avoid the possibility of cracking the container due to thermal expansion of the resin.

Availability

Sources are normally delivered within 6 weeks from receipt of order.

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1000ml Marinelli beakers

Application
Marinelli beakers are used when the radioactivity to be measured is low and the limits of detection require special geometries of the sample container in order to maximize the counting efficiency of the measurement system. The use of solid reference sources minimizes contamination risk and avoids calibration errors due to incorrect handling of solutions.

ISO classification
ISO/12/C22323
Drawing: VZ-1262-001 and VZ-1520-001

Construction

These Marinelli beakers are constructed from polypropylene and are resistant to acids and most organic solvents. The radioactive material is homogeneously incorporated in a special water-equivalent plastic matrix. The matrix density is normally 1g/cm3, but for Ra-226 and Th-232/Th-228 sources, the density is 1.15g/cm3. The empty beakers are available with a choice of a tight fitting lid (for aqueous solutions) or a more robust screw-top version (for low viscosity liquids).

Ordering information - VZ-1262-001 - bore diameter 77mm1) - Type 1N

Energy range

Radionuclid(s)

Total activity
[kBq]

Density
[g/cm3]

Product
code

80-1836 keV

Mixture NG1

44

0,97

QCRB1240

88-1836 keV

Mixture NG2

37

0,97

QCRB1242

60-1836 keV

Mixture NG3

40

0,97

QCRB1155

46-136 keV

Mixture NG4

46

0,97

QCRB2186

662 keV

Cs-137

5

0,97

CDRB1154

Multiline

Th-232 in equilibrium
with Th-228

1

1,15

TYRB1239

Multiline

Ra-226

3

1,15

RARB1136

Empty Container

not applicable

NQ7013

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Ordering information - VZ-1520-001 - bore diameter 85mm - Type 1W

Energy range

Radionuclid(s)

Total activity
[kBq]

Density
[g/cm3]

Product
code

80-1836 keV

Mixture NG1

44

0,97

QCRB1241

88-1836 keV

Mixture NG2

37

0,97

QCRB1243

60-1836 keV

Mixture NG3

40

0,97

QCRB1244

46-136 keV

Mixture NG4

46

0,97

QCRB2197

662 keV

Cs-137

5

0,97

CDRB1249

Multiline

Th-232 in equilibrium
with Th-228

1

1,15

TYRB1250

Multiline

Ra-226

3

1,15

RARB1414

Empty Container
(tight fitting lid)

not applicable

NQB1245


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Mixed Nuclide Marinelli Beaker Standards - Type EG-LVM-ML

These configurations provide a convenient method to calibrate HPGe and NaI(Tl) detectors. The radioactivity is uniformly dispersed in the matrix. Specify the matrix, container type and size. For the Marinelli beakers, specify the detector type. The following are examples of customer-supplied materials that may also be used: • Soil • Vegetation/Food Products • Pulverized Concrete Series LVM-ML Marinelli beakers, for both HPGe and NaI(Tl) detectors, are available in 500 mL, 1000 mL, 2000 mL and 4000 mL sizes. This configuration is useful where maximum efficiency is needed such as environmental samples. See below for a complete listing of available sizes.

GA-MA Catalog Numbers for Marinelli Beakers:

Catalog Number

Detector Types

Detector “Endcap”
[Inches]

Diameter
[cm]

200 ml Models

443016

Germanium or Ge-Li

3.00

7.6

463316

Germanium, 3 x 3 Nal

3.25

8.3

500 ml Models

523N-E

2 x 2 Nal

2.25

5.7

527G-E

Germanium

2.75

7.0

530G-E

Germanium or Ge-Li

3.00

7.6

533N

Germanium, 3 x 3 Nal

3.25

8.3

538G

Germanium

3.75

9.5

541G

Germanium

4.00

10.2

580G

Germanium

3.15

8.0

590G

Germanium

3.54

9.0

1 Liter Models

125G

Germanium, 2 x 2 Nal

2.50

6.4

127G

Germanium

2.75

7.0

130G

Germanium or Ge-Li

3.00

7.6

LA130G

Germanium or Ge-Li

3.00

7.6

132G

Germanium

3.25

8.3

133N

3 x 3 Nal

3.25

8.3

138G

Germanium

3.75

9.5

141G

Germanium

4.00

10.2

190G

Germanium

3.54

9.0

2 Liter Models

227G

Germanium

2.75

7.0

230G

Germanium or Ge-Li

3.00

7.6

233N

3 x 3 Nal

3.25

8.3

4 Liter Models

430G

Germanium or Ge-Li

3.00

7.6

433N

3 x 3 Nal

3.25

8.3

438G

Germanium

3.75

9.5

441G

Germanium

4.00

10.2

445N

Germanium, 4 x 4 Nal

4.25

10.8

448G

Germanium

4.75

12.1


Standard Matrices:

Matrix

Density

Description

Density Tolerance

Epoxy

1.0 g/cm3

Standard IPL Epoxy Mixture

+/-10%

Sand

1.7 g/cc               

50-70 Mesh Sand

Epoxy

1.1 to 2.0 g/cm3

Standard IPL Proprietary Filler

+/-10%

Epoxy

2.1 to 3.5 g/cm3 1)

Upon Request

+/-10%

Epoxy

0.4 to 0.9 g/cm3

Standard Epoxy Using Proprietary LD Filler

+/-10%

Foam

0.04-0.4 g/cm3 2)

Low Density Styrofoam

0.04 -0.4 g/cm3

1) Not available with Am-241 or Pb-210 due to attenuation of the gamma emissions from the epoxy and interference of coincidental x-ray 24 emissions from the epoxy matrix with the gamma rays from Am-241.

2) Volumes of 100 mL and above only. Below 100 mL, density cannot be guaranteed.

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Type GA-MA

Construction
The beakers are constructed from polyethylene and are resistant to acids and most organic solvents. The radioactive material is homogeneously incorporated in a special water-equivalent plastic matrix. The bore diameter is 77mm.

Ordering Information


Beaker
Type

Energy
range

Radionuclide(s)

Nominal
total activity
[kBq]

Density
[g/cm3]

Product
code

530G

88-1836 keV

Mixture NG2

37

0,97

QCR13

130G

88-1836 keV

Mixture NG2

37

0,97

QCR14

430G

88-1836 keV

Mixture NG2

37

0,97

QCR15

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Simulated Gas Standards (SGS-ML)

This configuration is available in the 7500 series only. EZIP's’ Simulated Gas Standard is used for the calibration of gamma-ray detectors for the counting of radioactive noble gases. EZIP supplies a uniform, low density foam standard in many configurations. These standards are available on a continual basis. The nuclide combination employed in the Simulated Gas Standard is a nine-nuclide multinuclide gamma standard. Americium-241 and/or Lead-210 can be added to allow efficiency determinations down to 60 keV or 46 keV respectively. See page 20 for more information on our 7500 series nine-nuclide gamma standard. Standard activity is 1-5 μCi (37 kBq-185 kBq) with higher activities on request. Single nuclide standards are also available on request. The foam matrix density range is 0.04-0.4 g/cc. The Simulated Gas Standards are NIST traceable ±5% at the 99% confidence level. <br>Please see the table listing of available beaker sizes.

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Sample Containers for Gamma Spectometry

Marinelli Beaker sample containers are used in gamma spectrometry to maximize the efficiency of measurement systems when the radioactivity of the sample material is low and the limits of detection require special geometries. Eckert & Ziegler Marinelli Beakers provide great counting efficiency for liquid and solid materials by arranging the sample material close to the detector. The beakers are constructed from polypropylene and are resistant to acids and most organic solvents. Eckert & Ziegler’s Marinelli Beakers areavailable with innovative screw-on lids ortraditional snap-on lids. The patented, tightsealing lids have an integrated handle for easy transfer of the beaker in and out of the detector shielding. The screw-on lid version is recommendedfor liquids, preventing contamination by spillage of solutions. The lid has an integrated sealing ring, assuring a leak proof operation. A special tool kit is available for pressure tight seal of the beaker, maintaining a seal up to 70 kPa (10 psi). Every Marinelli Beaker is labeled with a barcode containing a unique serial number for easy sample identification.

Please see the product information for further details and and enquire with information about the quantity.

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USA / North and South America / Australia / China & Far East Asia

Eckert & Ziegler Analytics, Inc.
1380 Seaboard Industrial Blvd.
Atlanta, GA 30318 (USA)
Phone: +1 404 352 8677
Fax: +1 404 352 2837
E-Mail: isotrakusa@dont-want-spam.ezag.com

Europe / Africa / Middle East Asia / Japan

Eckert & Ziegler Nuclitec GmbH
Gieselweg 1
38110 Braunschweig, Germany
Phone: +49 5307 9320
Fax: +49 5307 932 272
E-Mail: infoisotrak@dont-want-spam.ezag.com


HOW TO FIND US

France

Eckert & Ziegler Isotope Products France
12 avenue des Tropiques
Hightec Sud - bâtiment B
91955 Courtaboeuf cedex
France
Phone: +33 (0)1 64 86 22 22
Fax: +33 (0)1 69 86 10 65
E-Mail: rudy.operon@dont-want-spam.ezag.com