10x4x45 mm, square opening, high form (2.5 ml). For photometric measurements in the approx. 340 to 800 nm range. Film thickness 10 mm. Transparent design with excellent optical properties. All cuvettes have a square filling opening which can be sealed perfectly with a special stopper (Item No. 2533). Each cuvette is individually protected in 10 polystyrene boxes of 100. Important: in order to reduce quality differences and tolerances, the cuvettes always come from one and the same mould and are combined to standard packs of 100. 10 identical packs are put together in a standard carton, with the result that 1000 cuvettes always lie in the absorption tolerance range of ±1%. And thanks to automated production, we can offer them at exceptionally attractive prices.