Patent ID: 7875239

Claim:
A sterilizer test device comprising: at least a pair of bodies releasably and resealably connected together defining an internal primary chamber within the device to which access is gained by disconnecting said bodies, at least one of said bodies being comprised of a porous element which allows penetration of steam there through from a plurality of different directions; tortuous path means provided internally of the device, sealingly dividing the primary chamber into two secondary chambers, a first secondary chamber being defined between the tortuous path means and an inner surface of said at least one body through which steam having permeated said body emerges, and a second secondary chamber being defined to the alternate side of said tortuous path means from the first secondary chamber, the tortuous path means having a single entry port in communication with the first secondary chamber and a single exit port in communication with the second secondary chamber, said steam being substantially constrained to flow from the first secondary chamber through the single entry port into and around said tortuous path means and then through the single exit port before emerging into the second secondary chamber; and indicator means being provided within the second secondary chamber, said indicator means having a characteristic which changes while in the presence of steam and temperature after a predetermined time.