Määräliuottimessa

Määräliuottimessa, often translated as a "measuring flask" or "volumetric flask" in English, is a laboratory glassware designed for accurately preparing or diluting solutions to a precise volume. It is characterized by a pear-shaped body, a long, narrow neck, and a single graduation mark etched onto the neck. This mark indicates the exact volume the flask is calibrated to contain when filled to that level at a specific temperature.

The primary function of a määräliuottimessa is to achieve a high degree of accuracy in volumetric measurements. When preparing a solution of a specific concentration, a precisely weighed amount of solute is dissolved in the flask, and then the solvent is added until the bottom of the meniscus aligns with the calibration mark. Conversely, it can be used to dilute a concentrated solution to a known, larger volume.

Määräliuottimessa are typically made of borosilicate glass, which provides good chemical resistance and thermal stability. They come in various volumes, ranging from a few milliliters to several liters. The calibration of a määräliuottimessa is critical and is usually indicated by a tolerance value, signifying the maximum permissible error in its volume. Due to their precision, they are essential tools in analytical chemistry, pharmaceutical preparations, and other scientific disciplines where accurate solution preparation is paramount.