Adjustable test pack

Details Adjustable test pack Adjustable test pack

G - Physics

01

N

116/66

G01N 21/78 (2006.01) A61L 2/28 (2006.01) G01M 3/04 (2006.01) G01N 31/22 (2006.01)

Patent

CA 1267812

ADJUSTABLE TEST PACK ABSTRACT OF THE INVENTION An adjustable test pack for determining the efficiency of a vacuum in an autoclave comprises a porous bundle partially including open cell foam and having non-porous layers placed on its surface to leave a portion thereof exposed. A sheet with a steam sensitive indicator ink printed thereon is selectively embedded in the bundle for placement in an autoclave where a vacuum is drawn to evacuate air from the bundle through its exposed surface portions. Steam is then introduced to replace the evacuated air and react with the indicator ink wherever there is contact. The amount of indicator ink contacted by the steam may be varied according to the selected placement of the indica- tor sheet in the bundle and provides a measure of the efficiency of the vacuum. *************

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