Answer and Explanation:
1) Beckman Coulter analyzers 800:
The principle behind Beckman Coulter analyzers 800 is based on flow cytometry. These machines use lasers and detectors to analyze and quantify different components of blood samples. The analyzer passes the sample through a flow cell where the cells are individually detected and analyzed. The lasers emit light at specific wavelengths, and the detectors measure the scattered or emitted light from the cells. By analyzing the light signals, the analyzer can determine various parameters such as cell size, shape, and fluorescence. This information helps in identifying and counting different blood cell types, such as red blood cells, white blood cells, and platelets.
2) Roller 20 PN:
The Roller 20 PN is a machine used in hematology labs for blood typing and crossmatching. It operates based on the principle of agglutination. Agglutination occurs when there is a reaction between specific antibodies and antigens present on the surface of red blood cells. In the Roller 20 PN, blood samples are mixed with reagents containing known antibodies. The machine then gently rotates the samples, allowing the antibodies to come into contact with the red blood cells. If there is a reaction between the antibodies and the corresponding antigens on the red blood cells, agglutination occurs, indicating a positive result. The Roller 20 PN provides a semi-automated and standardized method for blood typing and crossmatching.
3) UV Viewing Cabinets:
UV Viewing Cabinets are used in hematology labs for visualizing and analyzing fluorescent stains or dyes. The principle behind these cabinets is based on ultraviolet (UV) light and fluorescence. UV light has a shorter wavelength than visible light and can excite certain fluorescent dyes. When the UV light illuminates the samples, the fluorescent molecules in the stains or dyes absorb the UV light energy and re-emit it at longer wavelengths, typically in the visible range. This emitted light is then visualized through filters in the UV Viewing Cabinets. The cabinets provide a controlled environment for safely observing and documenting the fluorescence emitted by stained samples, allowing for analysis and interpretation of the results.
In summary, the principle behind Beckman Coulter analyzers 800 is flow cytometry, Roller 20 PN operates based on the agglutination principle, and UV Viewing Cabinets utilize UV light and fluorescence for visualizing and analyzing fluorescent stains or dyes.