What are the official methods of moisture content determination?

Field microscopy is a widely used technique in various industries and research fields for rapidly determining the moisture content of materials. Here are the two official methods of moisture content determination using field microscopy:

1. Gravimetric Method

• A known weight of the sample is taken and placed in an oven at a specific temperature.
• The sample is heated until it reaches a constant weight, indicating that all the moisture has been removed.
• The difference between the initial and final weights of the sample represents the moisture content.

2. Karl Fischer Titration

• A known weight of the sample is dissolved in a suitable solvent.
• A reagent containing iodine and sulfur dioxide is added to the solution until the color changes from brown to yellow.
• The volume of the reagent used is directly proportional to the moisture content of the sample.

Both methods provide reliable and accurate results for moisture content determination. The choice of method depends on the specific material, the accuracy required, and the availability of equipment.