Blood counting machines aspirate a very small amount of the specimen through narrow tubing followed by an aperture and a laser flow cell. Laser eye sensors count the number of cells passing through the aperature, and can identify them; this is flow cytometry.
In computing, Extract, Transform and Load (ETL) refers to a process in database usage and especially in data warehousing that performs: Data extraction â extracts data from homogeneous or heterogeneous data sources.
An NRTL functions to provide independent evaluation, testing, and certification of any electrically operated or gas-and oil-fired product. ETL is recognized as an NRTL in the United States and, in a similar capacity, as a Testing Organization and Certifying Body in Canada by the Standards Council of Canada.A product bearing the ETL Listed Mark is determined to have met the minimum requirements of prescribed product safety standards.nform them about the NRTL program. Explain to them how the ETL Product Safety Certification Program includes the same testing, listing, labeling, and follow-up inspection services as UL, and that itâs accredited by the same organizations, agencies, and regulatory bodies.