White Bear Photonics offers high quality standard cuvettes from Starna. These cuvettes are offered in glass or quartz. Quartz materials are used when measurements below 320 nm are required, which require high signal to noise. Glass cuvettes are often used more often in the visible and near infrared. Most spectrometer applications use 10 mm pathlengths, depending on the sample optical density, shorter or longer pathlengths are available.