Moisture content is a crucial factor in various industries, ranging from agriculture to manufacturing. Hygrometry methods provide reliable and accurate techniques to determine the moisture content of materials. The official methods of moisture content determination are:
This method involves heating a sample at a specified temperature in an oven until it reaches a constant weight. The weight loss is attributed to moisture evaporation, and the moisture content is calculated as a percentage of the original weight.
This volumetric method chemically reacts a sample with iodine in the presence of a suitable solvent. The iodine reacts with water molecules, and the endpoint is reached when all water has been consumed. The moisture content is calculated based on the volume of iodine solution used.
This method utilizes a microwave oven to rapidly heat a sample. The moisture evaporates, and the weight loss is measured to determine the moisture content. This method is suitable for materials that are sensitive to heat.
This method involves reacting a sample with excess calcium carbide, which generates acetylene gas proportional to the moisture content. The acetylene gas is collected and measured to calculate the moisture content.
This method measures the capacitance of a material as its moisture content changes. The capacitance increases with higher moisture content. This method is often used for continuous monitoring of moisture content.
This method involves measuring the wet-bulb and dry-bulb temperatures of air. The moisture content of the air is determined based on the difference between these temperatures. This method is commonly used for environmental monitoring.