These are laboratory essentials consisting of cylindrical glass or plastic vessels used for holding, mixing, or heating small amounts of liquid or solid chemicals. A supporting framework, typically made of plastic, metal, or wood, is designed to hold multiple of these vessels upright, preventing spills and facilitating organization during experimentation. As an example, a researcher might use multiple of these vessels, held in their designated support, to prepare serial dilutions of a sample for analysis.
The use of these paired items is fundamental to numerous scientific disciplines, ensuring safe handling of substances and streamlined workflows. Historically, their adoption significantly enhanced the efficiency and accuracy of laboratory procedures, allowing for parallel experimentation and reducing the risk of contamination. This, in turn, has accelerated the pace of scientific discovery and technological advancement.