Image Credits: Optical Building Block Corporation and Small Parts, Inc.
Cuvettes are small narrow circular, triangular, square, or rectangular sample containers for spectroscopy. They are sometimes called cells.
How Cuvettes Are Used
Cuvettes are filled with samples, usually diluted or suspended in liquid, and placed within a spectroscopy device, such as a colorimeter, electroporator, fluorometer, spectrometers, spectrophotometer, or tintometer. This video discusses a spectrophotometer, including placement of the cuvette.
Video Credit: Worcester Polytechnic Institute
Types of Cuvettes
Curvettes vary widely, depending on their use and the measuring instrument. Certain uses require shaped, tinted, self-masking, flow, or water-jacketed cells. Electropolation curvettes are fitted with electrodes. Tandem (divided) curvettes have two chambers. Demountable cells can be taken apart after each use.
Image Credits: BYK Additives and Instruments, ECVV Co., Precision Cells, Thermo Scientific Liquid Handling, Ocean Optics, ALine, Inc., Starna Cells
Common retangular curvettes have a 10 mm pathlength, but they can range from as little as 1 mm to 100 mm and more.
1 to 100 mm curvettes
Image Credit: Optiglass Ltd.
Volume varies by the curvette's size and the thickness of its walls. Standard, semi-micro, micro, and even smaller reservoir curvettes are available.
Standard, semi-micro, and micro curvettes
Image Credit: MicroscopesBlog.com
Glass, plastic, and quartz are common curvette materials.
Special treatment is necessary for cryogenic uses.
Certain curvettes have roughened walls on opposite sides to improve grip and handling; the perpendicular walls are clear for measuring.
Single- or limited-use applications can benefit from disposable or semi-disposable curvettes.
Stopper, screw, or septum tops may be colored or frosted for identification and labeling.