A simple method is described for measuring liquid density based on stretching of the spring and equilibrium of weight and elastic force. The method involves placing a container with liquid under test on the spring causing a stretch of the spring that is directly proportional to the weight of the liquid. With this technique, the liquid density can be determined without measuring its mass and volume, and it should help students comprehend the concept of density more easily. The design of the measuring setup in this study is made using tools and materials that are simple and easy to obtain, such as spring, ruler, and small plastic or metallic container (tube). Two liquids used to test the measuring method were ethanol and glycerol. A test showed that the density of the test liquids at room temperature could be measured with the relative uncertainty of 3%, hence the reliability of the described method was confirmed.

描述了一种基于弹簧的拉伸以及重量和弹力平衡来测量液体密度的简单方法。该方法包括将装有待测液体的容器放在弹簧上，导致弹簧的拉伸与液体的重量成正比。使用这种技术，可以在不测量其质量和体积的情况下确定液体密度，它应该有助于学生更容易地理解密度的概念。本研究中测量装置的设计是使用简单易得的工具和材料制成的，例如弹簧、尺子和小塑料或金属容器（管）。用于测试测量方法的两种液体是乙醇和甘油。