Ads
related to: beckman coulter hematology analyzers
Search results
Results From The WOW.Com Content Network
Hematology analyzers (also spelled haematology analysers in British English) are used to count and identify blood cells at high speed with accuracy. [ 1 ] [ 2 ] [ 3 ] During the 1950s, laboratory technicians counted each individual blood cell underneath a microscope .
The company was founded by Caltech professor Arnold O. Beckman in 1935 as National Technical Laboratories to commercialize a pH meter that he had invented.. In the 1940s, Beckman changed the name to Arnold O. Beckman, Inc. to sell oxygen analyzers, the Helipot precision potentiometer, and spectrophotometers.
A Coulter counter [1] [2] is an apparatus for counting and sizing particles suspended in electrolytes. The Coulter counter is the commercial term for the technique known as resistive pulse sensing or electrical zone sensing. The apparatus is based on the Coulter principle named after its inventor, Wallace H. Coulter.
The first automated hematology analyzer, the Coulter counter, was invented in the early 1950s by Wallace H. Coulter. [ 93 ] [ 94 ] The analyzer worked on the Coulter principle, which states that when cells are suspended in a fluid carrying an electric current and passed through an aperture, they cause decreases in current proportional to their ...
Roche Cobas 6000 Roche Cobas u 411 Beckman Chemistry analysers: Access (left); Synchron (right). Racks: for putting samples, quality controls or calibrations. Cobas 6000 These tubes are put in the racks for testing. Photometry is the most common method for testing the amount of a specific analyte in a sample. In this technique, the sample ...
The Coulter counter was initially designed for counting red blood cells, but with later modifications it proved effective for counting white blood cells. [60] Coulter counters were widely adopted by medical laboratories. [211] The first analyzer able to produce multiple cell counts simultaneously was the Technicon SMA 4A−7A, released in 1965 ...