Close-up view of a police officer transferring a vial of blood to a technician for blood alcohol analysis at a laboratory associated with the Philadelphia Police Department. Per notations accompanying the photograph,…

General view of an unidentified female technician loading blood serum samples into a Perkin-Elmer Model F-40 Multifract Gas Chromatograph in a laboratory at the Institut für Rechtsmedizin located in Göttingen, Germany. …

General view of an unidentified female technician inserting a sample into a Perkin-Elmer Model F-30 Gas Chromatograph for analysis at the the National Institute for Occupational Safety and Health (NIOSH) Hazards…

General view of medical technician Michael D. Shaw using a Perkin-Elmer Model 930 Gas Chromatograph to analyze a urine sample in the toxicology laboratory at St. Francis Hospital in Hartford, Connecticut. Per notations…

Close-up view of a sample being inserted into a Perkin-Elmer Model 900 Gas Chromatograph for analysis at an unidentified laboratory facility. The individual visible in the photograph is also unidentified.

Close-up view of a sample being inserted into a Perkin-Elmer Model 900 Gas Chromatograph for analysis at an unidentified laboratory facility.

General view of chemist William A. Lonneman preparing an air sample for analysis by three Perkin-Elmer gas chromatographs in an Environmental Protection Agency (EPA) mobile laboratory. Per notations accompanying the…

General view of an unidentified chemist operating a Perkin-Elmer gas chromatograph in an Environmental Protection Agency (EPA) Region II laboratory located in Edison, New Jersey. Per notations accompanying the…

General view of Ernest Bartha, director of the Elyria City Health Department Laboratory, injecting a drug evidence sample into a Perkin-Elmer gas chromatograph. Per notations accompanying the photograph, the instrument…

General view of chemist Janet Sheridan placing two oil samples into a Perkin-Elmer double-beam fluorescence spectrophotometer at a Coast Guard Research and Development Center laboratory. Per notations accompanying the…

General view of clinical technologist Mullin Chiong measuring a urine sample prior to analysis in the analytical laboratory at the Yale-New Haven Medical Center. Per notations accompanying the photograph, a Perkin-Elmer…

General view of Dr. Peter Jatlow, director of the clinical laboratory, and technologist Ying-Lin T. Gravel examining the graphical output of a Perkin-Elmer fluorescence spectrophotometer in use at the Yale-New Haven…

General view of research chemist Dr. Russell Rouseff analyzing the spectrum produced by a Perkin-Elmer fluorescence spectrophotometer in use at the Florida Department of Citrus research laboratory located in Lake…

General view of Drs. S.V. Ting (left) and Russell Rouseff (right) examining the graphed readings of a Perkin-Elmer fluorescence spectrophotometer in a Florida Citrus Department laboratory located in Lake Alfred,…

General view of an unidentified employee using a Perkin-Elmer fluorescence spectrophotometer in a mobile laboratory for the Environmental Protection Agency's Oil and Hazardous Materials Spills branch. Per notations…

General view of two unidentified chemists discussing the spectrum of a compound analyzed using a Perkin-Elmer fluorescence spectrophotometer in the laboratory of the Biomolecular Sciences Section of the Arthur D. Little…

General view of a sample of anti-cancer drug metabolite being inserted into the cell of a Perkin-Elmer fluorescence spectrophotometer at an unidentified laboratory facility. The woman visible in the photograph is…

General view of an unidentified technician inserting a coal sample into the combustion chamber of a Perkin-Elmer Model 240 elemental analyzer in the research laboratory at the University of West Virginia's Coal Research…

General view of an unidentified female chemist examining the recording graph from a Perkin-Elmer elemental analyzer in use at a laboratory associated with the Foster Wheeler Corporation. Per notations accompanying the…

General view of senior scientist Dr. John H. Ryther seated next to a Perkin-Elmer Elemental Analyzer in a laboratory facility at the Woods Hole Oceanographic Institution located in Woods Hole, Massachusetts. Per…

General view of technician Georgina Phillips operating a Perkin-Elmer elemental analyzer in the Marine Ecology Laboratory at the Bedford Institute of Oceanography located in Dartmouth, Nova Scotia, Canada. Per notations…

General view of a Perkin-Elmer differential scanning calorimeter with a robotic autosampler in use at an unidentified laboratory facility. The individual visible in the photograph is identified as Christa [surname…

General view of a Perkin-Elmer differential scanning calorimeter with a robotic autosampler in use at an unidentified laboratory facility. The individual visible in the photograph is identified as Mike DeVito.

Close-up view of a Perkin-Elmer Model DSC-1 Differential Scanning Calorimeter. The man posed with the instrument is unidentified.

General view of chemist Abraham Rednor placing a sample in the subambient temperature chamber of a Perkin-Elmer differential scanning calorimeter at the U.S. Army Chemical Test Branch laboratory located in Edgewood,…