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 techniques include precipitation, where the analyte forms an insoluble compound, and filtration to separate it from the solution. These methods are highly precise and often used in laboratories for quantitative analysis. They require careful handling and specific conditions to ensure accurate results. Gravimetric analysis is widely applied in fields such as chemistry, environmental science, and materials science, making it a fundamental technique in analytical chemistry.