Material: Qx (Special quartz with a range of 200-3500nm), Light Path:50 mm, Outside Dim.: 45x12.5mm, Inside Width:9.5mm, Base Thickness:1.5mm, Vol.:17500µL, Window:2, Includes: PTFE lid. Requires: rectangular cell holder, P/N 204-23118-01 or 204-27208-00 (4 cell holder). Replacement for 200-34944-00