Hydrometer

Hydrometer

<< >>
Usage conditions apply
Downloads
Description
Glass hydrometer/thermometer combination with mercury ballast. The paper label is marked “QUEVENNES LACTOMETER TP 60° F.” and “SKIMMED MILK” and “Unico.” In 1841, T. A. Quevenne, chief pharmacist at the Hopital de la Charité in Paris, described a hydrometric method of determining the richness (fat content) and purity of milk. Unico was the trademark of the Union Thermometer Co., a New York City firm that was in business by 1919.
Location
Currently not on view
Object Name
Hydrometer
maker
Unico
Associated Place
United States: New Jersey
Physical Description
glass (overall material)
Measurements
overall: 35.5 cm; 14 in
overall in box: 1 5/8 in x 14 9/16 in x 1 1/2 in; 4.1275 cm x 36.98875 cm x 3.81 cm
ID Number
1991.0691.49
accession number
1991.0691
catalog number
1991.0691.49
Credit Line
June W. Leonard
See more items in
Medicine and Science: Chemistry
Data Source
National Museum of American History
Nominate this object for photography.   

Our collection database is a work in progress. We may update this record based on further research and review. Learn more about our approach to sharing our collection online.

If you would like to know how you can use content on this page, see the Smithsonian's Terms of Use. If you need to request an image for publication or other use, please visit Rights and Reproductions.

Comments

Add a comment about this object