Third Harmonic Generation Method
What are the official methods of moisture content determination?
One of the official methods of moisture content determination is the Third Harmonic Generation (THG) method. The THG method is based on the principle that the intensity of the third harmonic generated in a nonlinear material is proportional to the moisture content of the material. This method involves irradiating the sample with a fundamental frequency laser beam and measuring the intensity of the third harmonic. The moisture content of the sample can then be determined by comparing the measured intensity to a calibration curve.
Advantages of the THG method:
- Non-destructive
- Fast
- Accurate
- Can be used on a variety of materials
Disadvantages of the THG method:
- More expensive than other methods
- Requires specialized equipment
- May not be suitable for all materials
The THG method is a powerful tool for moisture content determination and is widely used in many industries. It is a reliable and accurate method that can be used on a variety of materials. However, it is important to note that the THG method is not suitable for all materials and may require specialized equipment.