History of Wells Fargo. This article outlines the history of Wells Fargo & Company from its origins to its merger with Norwest Corporation and beyond. The new company chose to retain the name of Wells Fargo and so this article also includes the history after the merger.
Other method takes advantage of the varying conductivities of blood at. different concentrations of blood. In Hemoglobincyanide method hemoglobin is chemically converted to form a cyanmethemoglobin. which is having maximum absorption around 540nm wavelength. The hemoglobin concentration is determined.
The infrared light is able to detect the amount of hemoglobin that is saturated with (or carrying) oxygen. The pulse oximeter will display a number that indicates the percent of hemoglobin that is saturated with oxygen. A pulse oximeter reading (denoted by SpO2) in the high 90s (i.e. 96%-99%) is considered normal. Here's how to read a pulse oximeter.  Clip the pulse oximeter on.