This is a set of two standard 10mm path length cuvettes, the most common and widely used size for general-purpose visible-range spectroscopy. Each cuvette holds a standard 3.5 mL volume and is constructed from high-quality optical glass.These cuvettes are designed for all applications in the Visible (Vis) and Near-Infrared (NIR) spectrum. They are the economical choice for all colorimetric assays and any measurement that does not require analysis in the deep UV range (below ~340 nm).