Object Details
- Coulter Electronics, Inc.
- inventor
- Coulter, Wallace H.
- Description
- In 1949, Wallace H. Coulter discovered a method for detecting and counting particles suspended in a fluid medium, later named the Coulter principle. Forcing a particle-filled fluid through a small aperture in an electrical current modulated the current, allowing Coulter to count the number of particles in the fluid. Coulter patented his Coulter Counter in patent number 2,656,508, a “Means for Counting Particles Suspended in a Fluid” on October 20, 1953, with an improvement filed in 1956 that added a manometer to move a precise volume of fluid through an aperture. In 1958, Wallace and Joseph Coulter established Coulter Electronics, Inc. to pursue commercial applications of their Coulter Counter. This Coulter Counter Model A was used during the 1970s and 1980s at the Animal Care Facility at the University of California, San Francisco. The Coulter Counter has a wide range of applications in medicine and science, most importantly in determining red and white blood cell counts.
- Ref: “Wallace Coulter, 85, Inventor of Medical Diagnostic Tools,” New York Times (Aug. 17, 1998), p. A13.
- Credit Line
- Gift of University of California Medical Center, Animal Care Facility (through Joseph Spinelli, D.V.M.)
- ca 1973
- ID Number
- 1987.0248.01
- catalog number
- 1987.0248.01
- accession number
- 1987.0248
- Object Name
- blood cell counter
- Physical Description
- metal (overall material)
- glass (overall material)
- plastic (overall material)
- electronics (overall material)
- Measurements
- overall: 50.7 cm x 41 cm x 24.5 cm; 19 15/16 in x 16 1/8 in x 9 5/8 in
- See more items in
- Medicine and Science: Medicine
- Health & Medicine
- American Enterprise
- Exhibition
- American Enterprise
- Exhibition Location
- National Museum of American History
- National Museum of American History
- Record ID
- nmah_1200679
- GUID (Link to Original Record)
- https://n2t.net/ark:/65665/ng49ca746aa-7788-704b-e053-15f76fa0b4fa
