Thermal indicator for vacuum sterilizer test packs

Description

FIG. 1 is a top plan view of a thermal indicator for vacuum sterilizer test pack showing my new design;

FIG. 2 is a side elevational view thereof;

FIG. 3 is an enlarged section taken on line 3--3 of FIG. 1;

FIG. 4 is a top plan view of the indicator after exposure in vacuum sterilizer;

FIG. 5 is a top plan view of a thermal indicator for vacuum sterilizer test pack showing a second embodiment of my new design;

FIG. 6 is a top plan view of a thermal indicator for vacuum sterilizer test pack showing a third embodiment of my new design; and

FIG. 7 is a top plan view of a thermal indicator for vacuum sterilizer test pack showing a fourth embodiment of my new design.

All embodiments are plain in bottom plan, with side and sectional views as shown in FIGS. 2 and 3.