The bulk of this section sits in the 841 range, where 841751 is black and 841752 through 841754 cover yellow, magenta and cyan. Yields quoted in the listing names run to roughly 22,500 pages for the color cartridges and around 31,000 for black, which is why these bottles suit departmental machines rather than small desktop units. Earlier numbers such as 841500 cover older black toner.
Savin and Ricoh Part Numbers
Savin machines are Ricoh engines under a different badge, and several listings on this page name the Ricoh equivalent alongside the Savin code. That cross-reference also extends to Gestetner and Lanier, so if the number on your bottle is not on this page, those sections are the logical next stop.
