Arnold Beckman biography
Born on April 10, 1900, in Cullom, Illinois, Arnold Beckman worked as a chemist and professor before creating the "acidimeter," meant to measure acidity levels and thus becoming the first pH meter. Beckman founded his own business, Beckman Instruments, and invented a number of additional items, including the Beckman Spectrophotometer. A renowned philanthropist, he died on May 18, 2004, at the age of 104, in La Jolla, California. Today, the Arnold and Mabel Beckman Foundation contributes to the advancement of scientific research.