Analysis of information sources in references of the Wikipedia article "American and British English spelling differences" in English language version.
not an error...simply an Americanism
in BRIT, use ampoule
{{cite web}}: CS1 maint: numeric names: authors list (link)Use, read and write standard metric units (km, m, cm, mm, kg, g, l, ml), including their abbreviations
although both l and L are internationally accepted symbols for the liter, to avoid this risk the preferred symbol for use in the United States is L
acronyms: take initial cap: Aids, Isa, Mori, Nato
{{cite web}}: CS1 maint: numeric names: authors list (link)acronyms: take initial cap: Aids, Isa, Mori, Nato
although both l and L are internationally accepted symbols for the liter, to avoid this risk the preferred symbol for use in the United States is L
Use, read and write standard metric units (km, m, cm, mm, kg, g, l, ml), including their abbreviations