Diffusion Pump
name: label: maker
content: E. Machlett & Son
notes: label: Description
content: Vapor diffusion pumps developed from studies made in Germany shortly before World War I. This example came from Columbia University. The inscription reads “P 2B2.” It was probably made by E. Machlett & Son, a New York City firm that advertised “High Vacuum Diffusion Pump (Pyrex glass) supplied to Columbia University and used exclusively in their physical laboratories.” Matchlett went on to say that “This form is extremely rapid and will produce the highest attainable vacua. It combines the advantages of the numerous forms of diffusion pump now in use while avoiding the disadvantages inherent in most other types.”
label: Description
content: Ref: E. Machlett & Son, ad in <i>Science</i> 55 (1922): xiii.
label: Description
content: B. B. Dayton, “The History of the Development of Diffusion Pumps,” pp. 107-113 in Paul A. Redhead, ed., <i>Vacuum Science and Technology: Pioneers of the 20th Century</i> (New York, 1994).
label: Location
content: Currently not on view
place: label: place made
content: United States: New York, New York
topic: label: Subject
content: Science & Scientific Instruments
setName: label: See more items in
content: Medicine and Science: Physical Sciences
creditLine: label: Credit Line
content: Columbia University
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.322955
label: catalog number
content: 322955
label: accession number
content: 249200
objectType: label: Object Name
content: diffusion pump
physicalDescription: label: Measurements
content: overall: 7 in x 23 in x 2 1/2 in; 17.78 cm x 58.42 cm x 6.35 cm
label: Measurements
content: overall: 9 in x 22 1/2 in x 3 in; 22.86 cm x 57.15 cm x 7.62 cm