Although the author is unknown, these instructions were most likely written by a Beckman Instruments employee. This glass electrode was used in Beckman pH meters.
Arnold Beckman invented his first pH meter in 1934 at…
Notebook consists of handwritten notes taken by Francis E. Scott at the U.S. Army Gas School at Camp Kendrick, New Jersey, on the use of gas in warfare. The notes include teaching aids and a circular letter from…
- Author Scott, Francis E.
- Subject Phosgene, Gases, Asphyxiating and poisonous--War use--Safety measures, United States. Army. Chemical Warfare Service, Fries, Amos A. (Amos Alfred), 1873-1963, United States. Army, Scott, Francis E., Chemical weapons, Chemical warfare--Safety measures--Equipment and supplies, Chemical warfare--Equipment and supplies, Great Britain. Army. Royal Engineers, Intrenchments, Gases, Asphyxiating and poisonous--War use, World War (1914-1918), Science--Study and teaching, Chemical warfare--Safety measures, Mustard gas, Trenches, Chemical warfare, Military education, Gas masks--Maintenance and repair, Chemical agents (Munitions), Artillery, Chloropicrin, and Chlorine
The McLeod Gauge measures very low pressures of gasses. Its presence in this collection indicates that it was used during the production of Beckman Instruments' early pH meters. These calibrations may have been written…
These calibrations and the diagram were done by W. E. Baier, Research Manager of the California Fruit Growers' Exchange. The McLeod Gauge measures very low pressures of gasses. Its presence in this collection indicates…