Talk:Babcock bottle

Picture needed

This article needs at least one picture. If possible, pictures of all variants (milk, skim milk, cream, Paley). Maybe the Smithsonian and/or the National Museum of American History can cede their photos for the Commons?--Jorge Stolfi (talk) 07:49, 5 March 2019 (UTC)

Stoddard bottle - fact or fiction?

This Thomas Scientific Catalog page (screenshot) about "DWK Life Sciences (Kimble) Bottle Unsaturation Gasoline" says

Results are read directly

Graduated/calibrated neck

Centrifuge from 718 to 934 rpm

They are ideal for measuring the upper phase in separation determinations. Gasoline bottles (7133M27) are 165 mm high and Stoddard bottles (7133M31) are 200 mm high. Both bottles are 37 mm in diameter to facilitate use with a centrifuge.

Gasoline: Determine unsaturated hydrocarbons in gasoline per US Bureau of Mines TP323, M5501.

Stoddard: Determine Stoddard Solvent absorption in sulfuric acid and total olefinic and aromatic hydrocarbons in petroleum distillates.

However, the order menu below shows only item 7133M27. I cannot find any mention of "Stoddard bottle" in a technical publication. All references to "Stoddard bottles" that Google finds are antique glass bottles of many shapes and sizes, made by a Stoddard Glass works that existed for a few decades in the 19th century. The website of Kimble (a division of DWK Life Sciences) does not seem to know about them either. There are dozen of online catalogs that list the 7133M31 item, but they are all verbatim copy-pastes of the same entry above.
Did there ever exist a technical "Stoddard bottle" and/or a "Stoddard test"? --Jorge Stolfi (talk) 04:02, 19 March 2019 (UTC)