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  Photographs

  California Mobile Emission Laboratory

  • Circa 1971

  The Air Pollution Control District mobile emissions van tested automobile exhaust with PID analysis systems.

  Beckman Instruments, Inc. became interested in measuring, controlling, and fighting air pollution in the late…

  • Subject Motor vehicles, Laboratories--United States, Motor vehicles--Pollution control devices, Automobiles--Motors--Exhaust gas--Measurement, Beckman Instruments, Inc., Air--Pollution--Measurement, Air quality management