Gravimetric methods are analytical techniques used to determine the quantity of an analyte based on its mass. These methods involve converting the analyte into a stable, solid form, which can then be weighed accurately. Common applications include measuring the concentration of substances in a solution or determining the purity of a compound. The process typically involves precipitation, filtration, and drying of the solid product. Once the mass is obtained, calculations can be made to find the concentration or amount of the original substance. Gravimetric methods are known for their high accuracy and reliability, making them essential in fields like chemistry and environmental science.