Specific gravity and the nutrition information panel Paragraph 5(1)(b) of Standard 1.2.8 requires that the average quantity of a beverage or other liquid food in a serving must be expressed in millilitres in your nutrition information panel.
https://www.foodstandards.gov.au/industry/npc/Documents/npc-specific-gravities.docx
d) the point of application of the resultant of the resultant of the pressure forces of part c. Specific weight of fresh water is 62.4 lb/ft3 (1000 kg/m3)
https://fog.ccsf.edu/~wkaufmyn/ENGN36/Course%20Handouts/ENGN%2036%20Homework.doc
Generally, the specific gravity increases with the amount of solids (e.g. sugars) and decreases with the amount of alcohol and fat present in a liquid, or air present in a whipped ingredient. It can also vary with the temperature of the ingredient.
https://www.foodstandards.gov.au/industry/npc/Documents/npc-specific-gravities.docx
If you have a liquid ingredient, the specific gravity value is used to convert the volume of this liquid ingredient to a gram weight. The NPC does this automatically by multiplying the volume (in mL) by the specific gravity of the liquid ingredient. It needs to do this to calculate a nutrition information panel correctly.
https://www.foodstandards.gov.au/industry/npc/Documents/npc-specific-gravities.docx
doc for "specific gravity of water 62 4".(Page 1 of about 18 results)