Leakage and contamination tests

Stringent tests for leakage are an essential feature of radioactive sources production. They are based on the current version of ISO9978. Some standard methods used for testing radiation sources are listed below.

All leakage tests for Eckert & Ziegler Nuclitec (EZN) sources are performed according to the current version of ISO9978.

Wipe test I (A)

Immersion test II (L)

Bubble test III (D)

Emanation test IV

The source is wiped with a swab or tissue, moistened with ethanol or water; the activity removed is measured.

The source is immersed in a suitable liquid at 50°C for 4 hours and the activity removed is measured.

The source is immersed in water or a suitable liquid and the pressure in the vessel reduced to 25-15 kPa. No bubbles must be observed. (This test conforms to ISO9978 exept that for sources, the 100mm3 free volume requirement is not met).

The source is placed in a gas tight enclosure with a suitable absorber and is left there for at least 3h. The source is considered leak tight when not more than 200 Bq Radon related to a collection time of 12h can be measured afterwards.

Limit 200Bq

Limit 200Bq

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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

Phone: +1 404 352 8677
Fax:     +1 404 352 2837
E-Mail: isotrak.usa@dont-want-spam.ezag.com

Europe / Africa / Middle East Asia / Japan

Eckert & Ziegler

Nuclitec GmbH
Gieselweg 1
38110 Braunschweig

Phone: +49 5307 932 0
Fax:     +49 5307 932 272
E-Mail: infoisotrak@dont-want-spam.ezag.com



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