Particle density testing steps:

1. Prepare the density meter host and its accessories, several plastic film samples to be tested, tweezers, tennis balls, alcohol, burette;
2. Power on the densitometer, fill the water tank with clean water up to the marking line, place it on the main unit, and then install the weighing platform;
3. After the instrument value stabilizes, press the peel button to remove the skin;
4. After slicing the sample, take 0.2g-0.3g and place it on the upper weighing plate. After the instrument stabilizes, press the Mode button to record the weight of the sample in the air;
5. To avoid bubbles affecting the final results when the sample is placed in water, soak the sample in alcohol and then place it on the basket in the water tank. Be careful not to stick and overlap the samples to avoid missing bubbles. After the instrument displays a stable value, press the Mode button, and the instrument will automatically calculate the result and display a density of 1.2508g/cm?.
6. Repeat the testing steps to check the repeatability of the density meter. The result of the second test is 1.2615g/cm? ，The results of repeated testingWith oneThe error of the second result is 0.0107, indicating good repeatability.