auto-immu 120

Auto-Immu 120 immunology analyzer uses Coulter’s Principle to find the size and volume of the cell. The sample is lysed and dissolved into an electrolyte solution in a container, which also holds a smaller container. The smaller container has 2 pumps running to and from its solution, one creating a vacuum and the other replacing the lost solution. The smaller container has a small hole (an orifice) near the bottom of the container. Coulter’s principle is applied through the use of two electrodes. One electrode (the internal electrode) is within the smaller container, and the other (the external electrode) is outside of the smaller container but within the electrolyte/sample solution. As the vacuum draws the sample cells through the orifice, the cell momentarily causes electrical resistance to the current as it passes through the orifice. This resistance is recorded, measured, amplified, and processed which can then be interpreted by the computer into a histogram. The 3-part analyzer is able to differentiate between 5 types of WBC’s, neutrophils, lymphocytes, and monocytes.