Type 46FL Semi-Micro Fluorescence Screw Cap Cell (Material: UV Quartz) (Lightpath: 10x4mm)• 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 for fluorescence measurements• Lightpath is 10x4mm • Outside dimensions 12.5x12.5x55mm• Inside Dimensions- 10x4x45mm• Capacity- 1.4mL