Scratch-resistant disposable cuvettes are effective at wavelengths from 220-900 nm. They can replace expensive quartz cuvettes in many DNA, RNA, and protein applications. Suitable for most spectrophotometers and photometers without special adapters. For ultra-micro cuvettes, select the window height that matches the beam height of your spectrophotometer. All cuvettes have a 10 mm pathlength. Min/max volume: 70/550 μl. Window dimensions: 2.0 x 3.5 mm.