A catalyst and sorbent is disclosed which comprises pellets with an absorbent core and a protective shell with a catalyst in the shell. After examining at least one security token, a public key and a portion of attribute information are identified. Further, the computer system is capable of adapting its calculations to specific endoscopes and particular testing changes to further improve accuracy by being context-sensitive. The information request message may comprise a newly defined ANSI-41 message, a vendor proprietary extension to the ANSI-41 message set, or an enhancement to an existing ANSI-41 message.