Twenty-five EPA stations were outfitted with this monitor for the St. Louis Regional Air Pollution Study in the early 1970s.
Beckman Instruments entered the gas chromatograph business in 1956 with the acquisition of…
- Circa 1975
This instrument was developed for the Environmental Protection Agency in 1975 by Beckman Instruments' Advanced Technology Operations. This portable instrument uses a charcoal trap to detect vinyl chloride (a…