Craig-Post Apparatus
date: label: Date made
content: 1944
notes: label: Description
content: Lyman C. Craig (1906-1974) was a biochemist working at the Rockefeller Institute for Medical Research; Otto Post was the machinist and glassblower at the Institute. Working together, they described a countercurrent distribution chain in 1949, and a refined version two years later. The Craig-Post apparatus proved to be a key element of liquid extraction techniques. Scientists at Charles Pfizer & Co. used this example to isolate pure crystalline penicillin.
label: Description
content: Ref: L. C. Craig and O. Post, “Apparatus for Countercurrent Distribution,” Analytical Chemistry 21 (1949): 501-504.
label: Description
content: “Lyman C. Craig, Chemist, Dies; Refined Purification of Drugs,” New York Times (July 9, 1974), p. 40.
label: Location
content: Currently not on view
place: label: place made
content: United States: Massachusetts
setName: label: See more items in
content: Medicine and Science: Medicine
creditLine: label: Credit Line
content: Gift of Charles Pfizer and Company; Accession 239425 (1962)
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: MG.M-10005
label: accession number
content: 239425
label: catalog number
content: M-10005
objectType: label: Object Name
content: Counter-Current Apparatus
physicalDescription: label: Physical Description
content: glass, ?, transparent (tube material)
label: Physical Description
content: metal (overall material)
label: Measurements
content: overall: 54 in x 54 in x 32 1/4 in; 137.16 cm x 137.16 cm x 81.915 cm