Watch glass

Description (Brief):

This object is a watch glass made from Pyrex glass. A watch glass is a round, concave glass dish used for evaporation in chemistry. It can also be employed for weighing solids and as a lid for flasks and beakers.

Description (Brief)

Pyrex has its origins in the early 1910s, when American glass company Corning Glass Works began looking for new products to feature its borosilicate glass, Nonex. At the suggestion of Bessie Littleton, a Corning scientist’s wife, the company began investigating Nonex for bakeware. After removing lead from Nonex to make the glass safe for cooking, they named the new formula “Pyrex”—“Py” for the pie plate, the first Pyrex product. In 1916 Pyrex found another market in the laboratory. It quickly became a favorite brand in the scientific community for its strength against chemicals, thermal shock, and mechanical stress.

Description (Brief)

This object is part of a collection donated by Barbara Keppel, wife of C. Robert Keppel. Robert Keppel taught at the University of Nebraska-Omaha after receiving his B.S. in Chemistry from the University of California, Berkeley, and his Ph.D. in organic chemistry from M.I.T. The glassware in the Keppel collection covers the 19th and early 20th centuries.

Description (Brief)

Sources:

Description (Brief)

Dyer, Davis. The Generations of Corning: The Life and Times of a Global Corporation. Oxford, New York: Oxford University Press, 2001.

Description (Brief)

Jensen, William B. “The Origin of Pyrex.” Journal of Chemical Education 83, no. 5 (2006): 692. doi:10.1021/ed083p692.

Description (Brief)

Kraissl, F. “A History of the Chemical Apparatus Industry.” Journal of Chemical Education 10, no. 9 (1933): 519. doi:10.1021/ed010p519.

Description (Brief)

National Museum of American History Accession File #1985.0311

Description (Brief)

“University of Nebraska Omaha.” 2015. Accessed May 4. http://www.unomaha.edu/college-of-arts-and-sciences/chemistry/student-opportunities/scholarships.php.

Date Made: after 1916

Maker: Corning Incorporated

Location: Currently not on view

Subject: Science & Scientific Instruments

Subject:

See more items in: Medicine and Science: Chemistry, Science Under Glass, Science & Mathematics

Exhibition:

Exhibition Location:

Credit Line: Gift of Barbara A. Keppel

Data Source: National Museum of American History

Id Number: 1985.0311.289Catalog Number: 1985.0311.289Accession Number: 1985.0311

Object Name: watch glass

Physical Description: pyrex (overall material)Measurements: overall: .9 mm x 89 mm; 1/16 in x 3 1/2 inoverall: 3/8 in x 3 1/2 in; .9525 cm x 8.89 cm

Guid: http://n2t.net/ark:/65665/ng49ca746a0-edeb-704b-e053-15f76fa0b4fa

Record Id: nmah_1096

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