This macro BRAND plastic cuvette has a min volume of 2.5ml, and max volume of 4.5ml. It is an excellent choice for most spectrophotometry applications in the visible range. Manufactured from PMMA, it provides accurate, reliable results, even at wavelengths as low as 300nm. (For wavelengths below 300nm, see our UV-cuvettes.) The disposable macro cuvette accommodates most sample volumes, and is compatible with most spectrophotometers and photometers. The cuvettes includes an arrow mark to indicate direction of transmission and reduce variation and adapts to the needs of most laboratory applications. It is manufactured from high-quality materials, and grouped by manufacturing mold cavity number to ensure the lowest variation in extinction coefficient. One of the world's largest producers of cuvettes, BRAND's 15 years of experience manufacturing quality cuvettes is your assurance of reliability. Size: Macro. Minimum Volume: 2.5ml. Maximum Volume: 4.5ml. 100/Pack. BrandTech #: 759081D.