The milliliter is a commonly used unit of capacity, also known as the unit of volume. 1 ml is equivalent to the volume of 1 cubic centimeter, that is, the volume that can hold liquid and gas. 1 ml water weight 1 g, which is the density of water.
The unit greater than milliliter is liter, and 1 liter is equal to 1000 milliliter, which is 1 cubic decimeter volume, 1 cubic decimeter water weight 1 kg.
In order to measure capacity, a measuring cup or cylinder is usually used. The measuring cylinder is a measuring instrument, which can't be heated, can't be used to measure hot liquid, and can't be filled with solution. Measuring cylinders are usually equipped with rubber pointed droppers. A measuring cylinder, like a scale, has a minimum scale. When reading, the line of sight should be flush with the lowest point of concave liquid level, but it is not necessary to estimate.