Standard Rectangular Optical Glass Cuvette, 10mm path, 10ctSee the current Data Sheet. Features 350 2500nm range V=3. 5mL Beam Width 10mm Technical Characteristics Spectral Range (>80%): 350 2500 nm; Transmission difference between different cuvettes: Less than 1% ((Typical transmission curves of glass cuvettes were measured empty, thickness 1. 25 mm x 2, including surface reflections, measured with a TIDAS II against air as reference).