In line with international standards, moisture content is officially determined using standardized methods for various materials and industries. These methods are widely recognized for their accuracy, reliability, and consistency of results.
Widely used and considered a reference method, the gravimetric method involves drying a sample at a specific temperature and measuring the weight loss. The moisture content is calculated as the ratio of the weight lost to the original weight of the sample.
Suitable for materials with low moisture content, Karl Fischer Titration involves chemically reacting the moisture in the sample with a Karl Fischer reagent. The amount of reagent consumed is proportional to the moisture content.
Similar to Karl Fischer Titration, coulometric titration electrolytically generates iodine, which reacts with the moisture in the sample. The amount of current required to generate the iodine is directly proportional to the moisture content.
This technique measures the absorption of infrared radiation by water molecules in the sample. The intensity of the absorption bands is related to the moisture content.
Moisture analyzers use a halogen or infrared heat source to dry a sample and measure the weight loss. They provide rapid and accurate results but are limited to specific sample types.
Microwave drying uses microwave energy to heat the sample, causing the moisture to evaporate. The moisture content is determined by measuring the weight loss or the dielectric properties of the sample.
NMR spectroscopy can differentiate between different types of water in a sample, providing information about moisture content and distribution.
Nano analysis methods involve using nanotechnology to characterize moisture content at a microscopic level. These methods have the potential for highly accurate and precise measurements.
The choice of method depends on factors such as the material type, moisture content range, accuracy requirements, and availability of equipment. These standardized methods ensure consistent and reliable determination of moisture content across industries.