1、 Preparation work

Check the equipment status

Before each use, carefully check whether all components of the analyzer are intact, especially key components such as the injection system, detector, and software interface. Ensure that all connections are securely fastened and leak free.

Prepare samples

Select suitable coating samples according to experimental requirements and record their basic parameters (such as composition, viscosity, etc.). For high viscosity samples, pre-treatment (such as dilution or ultrasonic dispersion) may be necessary to ensure uniform particle dispersion.

Calibration instrument

Use standard particles for instrument calibration to ensure the accuracy of measurement results. Adjust the instrument parameters according to the manufacturer's instruction manual until they reach the appropriate state.

2、 Sample preparation

Distributed processing

Paint particles are prone to aggregate and form aggregates, which affects the results of particle size analysis. Therefore, the sample must be thoroughly dispersed before analysis. Common methods include mechanical stirring, ultrasonic dispersion, and adding dispersants. Select appropriate methods based on sample characteristics to ensure uniform dispersion of particles.

Sampling quantity control

Accurately weigh an appropriate amount of sample, and it is usually recommended to take samples ranging from a few milliliters to several tens of milliliters. Too many or too few samples can affect measurement accuracy. Accurately transfer the sample to the sample pool of the analyzer using a pipette or microinjector.

3、 Operation steps

Startup and Settings

Turn on the power of the analyzer and enter the operation interface after the system stabilizes. Set appropriate measurement parameters based on sample type and expected particle size range, such as laser intensity, sampling time, scanning frequency, etc. For different types of coatings, corresponding parameters need to be adjusted to achieve the best results.

Load sample

Carefully pour the dispersed sample into the sample pool, ensuring that the sample fills the entire measurement area without any residual bubbles. Close the lid of the sample pool and begin the measurement process. During this process, avoid shaking or moving the instrument to avoid interfering with data acquisition.

data analysis

After the measurement is completed, the software will automatically generate a particle size distribution map and related statistical data (such as average particle size, D50 value, etc.). Carefully review these data, confirm their reasonableness, and compare them with historical data. If necessary, repeat the measurement several times and take the average to improve accuracy.