How to use particle size analyzer with wet method?

A laser particle size analyzer is an instrument used to measure the size distribution of particles in a sample. When using the wet method, the sample is suspended in a liquid medium to prevent particle agglomeration and to enable the laser to pass through the sample without being blocked by air gaps. Here's how to use a laser particle size analyzer with wet method:

1.Preparation of the sample:

The first step is to prepare the sample. The sample should be thoroughly mixed and dispersed in a suitable liquid medium, typically distilled water or an organic solvent, depending on the nature of the sample. The sample should be homogenous and free from any visible clumps or aggregates.

2.Calibration:

Before taking measurements, the laser particle size analyzer must be calibrated with a standard sample of known size distribution. Calibration ensures that the instrument is working correctly and provides accurate results.

3.Loading the sample:

The next step is to load the sample into the instrument. The sample is typically loaded into a cell that has a narrow path length to ensure that the laser can pass through the sample effectively. The cell is placed in the instrument, and the measurement parameters are set according to the nature of the sample.

4.Analysis:

The laser is then passed through the sample, and the light scattered by the particles is collected by detectors. The intensity of the scattered light is proportional to the size of the particles, and the instrument uses this information to calculate the size distribution of the particles in the sample. The instrument may also measure other properties of the particles, such as shape, surface charge, and concentration.

5.Interpretation of results:

Once the measurement is complete, the instrument provides a report that shows the size distribution of the particles in the sample. The report may include various parameters, such as the mean particle size, the size distribution width, and the concentration of particles in different size ranges. The data can be used to optimize processes, troubleshoot quality issues, and improve product performance.

6.Cleaning:

After completing the measurement, the instrument should be cleaned thoroughly, following the manufacturer's instructions. This will help prevent contamination of future samples and ensure that the instrument provides accurate results for the next analysis.

Overall, a laser particle size analyzer with wet method is a powerful tool for analyzing the size distribution of particles in a liquid medium. With careful sample preparation and accurate calibration, the instrument can provide valuable insights into the properties of the sample, which can be used to optimize processes and improve product quality.