I would use milliliters to measure a bottle of cough syrup, as it is a more precise unit for smaller quantities typically found in medicine. Cough syrup bottles often contain volumes ranging from 100 mL to 500 mL, making milliliters more practical for dosing and measurement. Liters would be too large for such small volumes.
milliliters
Milliliters
liters
Liters, or you would have to talk about measurements of thousands
The amount of liquid in a water bottle is typically measured in milliliters (mL) or liters (L).
liters
liters or milliliters or cups.
liter
Typically, milliliters (ml) are used to measure the volume of perfume in a bottle due to the small quantities involved. Liters (l) are not commonly used for such small measurements.
Food coloring can be measured in either milliliters or liters and be correct, however it's normally measured in mL (milliliters) rather than L (liters) because it's practical to say a 20 mL tube of food coloring rather than 0.02 Liters of food coloring.
usually liters unless it is in a can
Liters (Most European and Asian countries quote capacity of refrigerator in liters)