Abstract: In the use of ethylene oxide as a sterilizing agent, toxic chemicals known as chlorohydrins may be formed in the sterilized materials. Chlorohydrins are difficult to remove using the normal pressure vacuum air purge cycles specified in the ethylene oxide sterilization process. Introduction of ammonia vapors in one or more of the pressure vacuum purge cycles provides a means to reduce chlorohydrin concentration in the sterilized materials.

Abstract: This invention is a two-part device for suspending a ring around a wearer's neck in the form of a pendant. The two-part device has a cover and an interior ring holding assembly where the interior ring holding assembly is suspended from a neck chain that also supports the cover. The device is structured so that the interior ring holding assembly may be readily removed from the cover and the ring thereby removed at will. Various configurations allow the ring to be either suspended with the stone down or suspended with the stone in an upward position. The device is intended to provide a secure means of transport and displaying a ring from a neck chain.