1, Sampling: Inhaled sputum, gastric fluid, intestinal fluid and other samples by inverting the negative pressure ball, the sample will be stored in another container for testing.
2, Preservation: The collected samples are stored in a sample cup for subsequent experimental analysis.
3, adjust the size of the negative pressure: negative pressure ball has the function of adjusting the size of the suction, such as the need to adjust the suction size, you also need to carry out the negative pressure ball inverted operation. Negative pressure ball is a medical device, commonly used to attract the respiratory tract in the secretion and secretion samples, generally used for sputum, gastric fluid, intestinal fluids and other samples collected and examined.