probenschale

A probenschale, also known as a sample dish or weighing dish, is a laboratory container designed for holding and manipulating small quantities of solid or liquid samples. Typically made of materials such as glass, plastic, or porcelain, probenschalen are chosen based on the specific requirements of the experiment, such as chemical resistance or the need for high temperatures. They are commonly used in analytical chemistry, biology, and materials science for tasks like weighing out precise amounts of substances, collecting precipitates, or facilitating reactions on a small scale.

The shape and size of a probenschale can vary. Some are shallow and wide, offering a large surface area for evaporation or observation, while others are deeper and more conical, facilitating easier transfer of contents. Disposable plastic probenschalen are often used to avoid contamination and simplify cleanup, especially in microbiology or when working with sensitive reagents. Reusable glass or porcelain versions require thorough cleaning between uses to maintain accuracy and prevent cross-contamination. The material's properties are crucial; for example, porcelain dishes are often used for high-temperature ignition or drying procedures due to their thermal stability. The simple yet essential design of the probenschale makes it a ubiquitous tool in many scientific disciplines.