Por que a distinção importa
US fluid ounce and Imperial quart belong to measurement conventions that may look familiar but are not always equivalent across countries. Mendeleev.com therefore keeps the system name next to the abbreviation and calculates from defined conversion factors rather than rounded kitchen rules.
Exemplo
1 US fl oz = 0.0260210682697 imp qt · 10 US fl oz = 0.260210682697 imp qt.
0.0260210682697 imp qt