A flame retardant and glow resistant zinc free cellulose product containing silica, modified with polyaluminium ions. The tape assembly is supported in the housing and contains a reel having a tape adapted to extend and retract from the front wall of the housing. An NO concentration corresponding value is obtained from a second detection element having a reduction section, and having an NO2NO sensitivity ratio greater than that of the first detection element. These trim codes along with the main codes are subsequently applied whenever the codes are used thereafter.