Search Results
-
Spectrophotometric data
- Undated
Table of spectrophotometer and pH readings of various substances, including strychnine, caffeine, amphetamine, benadryl, and ascorbic acid. As this document is undated and vaguely titled, it is unclear which instrument…
-
Wherever there's water, there's pH...
- Undated
Advertisement about using various models of Beckman pH meters for monitoring water quality in industrial settings.
Arnold Beckman invented his first pH meter in 1934 at the request of a chemist from the California…
-
Hand-drawn diagram for batteries used with a Beckman Model G pH Meter
- Undated
Instructions and a visual diagram for hooking up 3 #5540 batteries to power a Beckman Model G pH Meter. These three smaller batteries could replace a single, large 22.5 volt battery. This diagram was written on Bob…
-
Portrait of Ezekiel [Ezéchiel] Weintraub
- Undated
Portrait of Ezekiel [Ezéchiel] Weintraub, a Russian-born chemist who was the first to produce 99 percent pure boron in 1909.
- Subject Portrait photography, Weintraub, Ezéchiel, Portraits
-
Helipot Division: Production
- Undated
The production room at the Helipot Division of Beckman Instruments, Inc., where mostly women employees assemble potentiometers, dials, and other small devices.
-
Portrait of Arnold O. Beckman (1900-2004)
- Undated
Dr. Arnold O. Beckman (1900-2004), pictured here with a DU Spectrophotometer, invented the first commercially successful electric pH meter in 1934. Thus began a long career manufacturing scientific and medical…
-
[Joseph Louis] Gay-Lussac
- Undated
A half-length portrait of French scientist Joseph Louis Gay-Lussac (1778–1850).
- Artist Delpech-François, Séraphin 1778-1825
- Contributor Belliard, Zéphirin, 1798-1861
- Subject Gay-Lussac, Joseph Louis, 1778-1850
-
The Honourable Robert Boyle
- Undated
Mezzotint of a portrait bust of the Irish chemist Robert Boyle (1627–1691) in an arched niche.
- Artist Faber, John, 1695?-1756
- Subject Boyle, Robert, 1627-1691
-
Martin Folkes Esqr.
- Undated
A half-length seated portrait of Martin Folkes (1690–1754), English mathematician and president of the Royal Society.
- Artist Hogarth, William, 1697-1764
- Subject Folkes, Martin, 1690-1754
-
Gerardus Blasius
- Undated
A half-length seated portrait of the 17th-century doctor Gerardus Blasius pointing to an anatomy figure in a book.
-
Joseph Black, M.D.
- Undated
A framed portrait of Joseph Black (1728–1799), professor of chemistry at University of Glasgow, seated and holding a document.
- Artist Rogers, J.
- Contributor Raeburn, Henry, Sir, 1756-1823
- Publisher Blackie & Son
- Subject Black, Joseph, 1728-1799
-
Tho. [Thomas] Graham
- Undated
A three-quarter-length portrait of Thomas Graham (1805–1869), the Scottish chemist who worked on the diffusion of gases.
- Subject Graham, Thomas, 1805-1869
-
Ch. Darwin
- Undated
A Chine-collé portrait of English naturalist Charles Darwin (1809–1882) sitting in a wicker chair near a hanging tapestry.
- Engraver Johnson, Thomas
- Subject Darwin, Charles, 1809-1882
-
-
Robt [Robert] Hare MD.
- Undated
A mid-length portrait of Robert Hare, MD.
- Subject Hare, Robert, 1781-1858
-
Beckman IR-1 Spectrophotometer without case
- Undated
The Beckman Instruments IR spectrophotometers began as a request from the Office of Rubber Reserve to Arnold O. Beckman in 1942, asking for an infrared spectrophotometer that they could use to create rubber. Under this…