What is the primary use of an analytical balance?

The primary use of an analytical balance is to determine the mass of a substance with high precision, typically in the milligram range. Analytical balances are designed for precise measurements and often have a readability of 0.0001 grams (or 0.1 milligrams), making them suitable for applications that require accurate weight determination of small quantities of material.

This precision is essential in various scientific and laboratory settings where even minor differences in mass can significantly affect experimental results or formulations. By using an analytical balance, researchers can ensure that they are working with exact amounts of reagents, which is crucial in chemical reactions, pharmaceuticals, and quality control processes.

In contrast, the other options involve either an inappropriate application for an analytical balance or tasks that are not within its primary function. For instance, weighing large samples is more suited to a top-loading balance, while measuring the volume of liquids is a function performed by graduated cylinders or volumetric flasks. Calibration of other balances is also a specialized task that does not directly align with the primary purpose of an analytical balance, which is focused on precise mass measurement.