BrandTech 759215 Plastic 2.1ml UV-Transparent Disposable Ultra-Micro UV-Cuvette, DNA-/DNase-/RNase-free, Individually Wrapped (Pack of 100) Ultra-micro UV-Cuvette UV-transparent disposable Cuvette; 8.5mm Eliminates the tedious and time-wasting Cuvette washing, and risk of sample carry-over associated with reusable quartz cuvettes Proprietary plastic material offers chemical compatibility superior to that of conventional plastic cuvettes of acrylic or polystyrene, and may be used with most polar organic solvents Has recessed windows to help protect against scratching and fit most commercial spectrophotometers and photometers Grouped by mold cavity number to maximize consistency between cuvettes and reduce variation in extinction coefficient