Type 41FL Macro Flourescence Cuvette with Screw Cap (Material: UV Quartz) (Lightpath: 10mm)• Cuvette has an airtight cap, which screws onto the top of the cuvette• Each cell comes standard with one closed screw cap and one open screw cap with a self-healing injection disc (SEPTA)• Material is UV Quartz (transmits over 80% between 190-2,500nm)• Four windows and the base optically polished• Lightpath is 10mm • Outside dimensions 12.5x12.5x55mm• Inside Dimensions- 10x10x45mm• Capacity- 3.5mL