Leak Test Information

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The following are descriptions of the leak tests performed by EZIP on the various products in this catalog. The applicable wipe test for the product ordered will be marked off on the back of the calibration certificates and/or nominal data sheets supplied with each source. More than one leak test type may be applicable per source. For example a calibrated solution supplied in a flame sealed ampoule will require both the standard wipe test and the ampoule leak test.

Standard Wipe Test
The source was wiped over its entire surface with a moistened filter paper disk. After drying, the disk was checked for activity using a windowless proportional counter, end-window G.M. tube or plastic scintillation detector. There was <0.001 μCi beta-gamma and < 0.0001μCi alpha of removable activity.

Special Wipe Test
The source was wiped over its entire surface with moistened polystyrene. The polystyrene was then dissolved in a liquid scintillation cocktail and counted in a liquid scintillation counter. There was < 0.001 μCi betagamma and <0.0001 μCi alpha of removable activity.

Ampoule Leak Test
The ampoule was kept in an inverted position on a filter paper disk or polystyrene wipe for a minimum of 16 hours. The wipe was then checked for activity using a windowless proportional counter, end-window G.M. tube, plastic scintillation detector or liquid scintillation counter. There was < 0.001 μCi beta-gamma and < 0.0001 μCi alpha of removable activity.

Leak Test Not Applicable
The active area of the source is uncovered or is protected by a very thin coating. Although the deposit is adherent, it is neither designed nor certified to pass a standard leak test. The inactive portions of the source have been checked using the standard wipe test or special wipe test depending on the nuclide. There was < 0.001 μCi beta-gamma and < 0.0001 μCi alpha of removable activity.

Other Leak Test
In some instances, such as the production of a custom source, the use of a non-standard leak test may be necessary. In such instances the test will be fully described in this section of the Leak Test

Certificate located on the back of the Calibration Certificate or Nominal Source Data Sheet.

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