Cobas u 411 The<unk>  is an automated analyzer using a flow technique called continuous flow analysis (CFA), or more correctly Segmented Flow Analysis (SFA) first made by the Technicon Corporation. The instrument was invented in 1957 by Leonard Skeggs, PhD and commercialized by Jack Whitehead's Technicon Corporation. The first applications were for clinical analysis, but methods for industrial and environmental analysis soon followed. The design is based on segmenting a continuously flowing stream with air bubbles.
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