What is a measuring cylinder

Graduated cylinder, measuring cylinder or graduated glass is a glass instrument used to measure liquids. A graduated cylinder is an instrument for measuring the volume of liquids. Specifications are expressed in the maximum capacity (mL) that can be measured. Commonly used ones are 10 mL, 25 mL, 50 mL, 100 mL, 250 mL, 500 mL, 1000 mL, etc. The scales on the outer wall are all in mL. Each small division of the 10 mL graduated cylinder represents 0.2 mL, while each small division of the 50 mL graduated cylinder represents 1 mL. It can be seen that the larger the measuring cylinder and the thicker the tube diameter, the smaller its accuracy and the greater the reading error caused by the deviation of the line of sight. Therefore, in the experiment, according to the volume of the solution taken, try to use the smallest measuring cylinder that can be measured at one time. Taking measurements in batches can also cause errors. If you want to measure 70ml of liquid, you should use a 100mL graduated cylinder.