Koeputkien

Koeputkien is a term of Finnish origin that generally refers to test tubes or specimen tubes. In a scientific or medical context, these are small glass or plastic containers used to hold, mix, or heat small amounts of liquid or solid material. They are a fundamental piece of laboratory equipment.

These tubes are typically cylindrical with one end closed and the other open. They come in various sizes and can be made from borosilicate glass, which is resistant to heat and chemicals, or plastic materials like polypropylene or polystyrene. The choice of material often depends on the intended application, such as heating, centrifugation, or long-term storage.

Koeputkien are used in a wide array of laboratory procedures, including chemical reactions, titrations, biological sample collection and analysis, and microscopy. They are often held using specialized racks or clamps, especially when heated or mixed. The open end allows for easy introduction of samples and reagents, while the closed end facilitates containment. The translucent nature of most koeputkien allows for visual observation of the contents.