According to the query Baidu Question Bank: mg is a unit of mass equal to 0.001 grams. mg is known as milligram in Chinese. It is usually used to measure the composition of liquids and medicines, and is a very small unit of measurement.
We usually see or use the mg unit in the following scenarios:
1. Laboratory research: in chemistry, biology and other scientific fields of research, often need to accurately measure the weight of the sample, this time it may be used to mg unit.
2. Medical drugs: in the medical and pharmaceutical fields, the active ingredient of a drug will usually be labeled in mg, such as a tablet in the active ingredient is 500mg, then here 500mg is the weight of the active ingredient in the drug.
3. Measurement of liquids: in many industries, such as beverage manufacturing, biomedical research, etc., the need to accurately control the volume and weight of the liquid, this time it may be used to mg this unit. For example, a bottle of 500ml of drinks, if every 100ml contains 10g of sugar, then the weight of sugar in a bottle of drinks is 50g (because 500ml is equal to 500g).