Tilavuuspullot

Tilavuuspullot, also known as volumetric flasks, are pieces of laboratory glassware designed to accurately measure specific volumes of liquid. They are typically pear-shaped with a long, narrow neck. Etched onto the neck is a single calibration mark, indicating the precise volume the flask is intended to hold when filled to that mark. This volume is usually a standard measurement, such as 100 mL, 250 mL, 500 mL, or 1000 mL.

The primary use of a tilavuuspullo is in the preparation of solutions with a precise concentration. A known mass of solute is dissolved in a solvent and then transferred to the tilavuuspullo. The flask is then carefully filled with the solvent until the bottom of the meniscus aligns with the calibration mark. This process ensures that the final volume of the solution is exactly the volume indicated on the flask, allowing for accurate calculation of molarity or other concentration units.

Tilavuuspullot are generally made of borosilicate glass, which provides good chemical resistance and thermal stability. They are commonly used in analytical chemistry, titrations, and other procedures where high accuracy in volume measurement is critical. It is important to note that tilavuuspullot are designed for measuring a single, fixed volume. For measuring variable volumes, graduated cylinders or pipettes are more appropriate. Proper handling and cleaning are essential to maintain their accuracy.