They have to leave the 1 L, because the FPLA requires DUAL labelling. Neither the metric only nor Customary alone is sufficient under the current law. Your hypothetical is illegal in the US.
>________________________________ > From: Parker Willey Jr. <[email protected]> >To: U.S. Metric Association <[email protected]> >Sent: Thursday, June 26, 2014 5:54 PM >Subject: [USMA:54055] Example of problem with round off errors, etc. > > > >Hi: > > > >Suppose someone takes a 1 liter bottle of Safflower seed oil and converts the >label info to legacy units for sale in the US. > >Then later, someone else wants to put on the label metric units, uses the >legacy info and converts it back resulting in a round off error. > > >See the attached picture. > > > >Also, in the discussion about "er" vs "re" endings on units of measure, you >remember the legacy unit of land area: acre. It is defined as 43560 legacy >square feet. Anyway, should it be spelled "acer". > > >Just a tidbit. > >...Parker Willey Jr. >San Jose, CA > >
