Lead acetate test
In ancient times, there were people who were good at testing things. The method was exquisite, and lead acetate was the main thing to do all kinds of tests.

Anyone who wants to test something, first prepare an appropriate amount of lead acetate and put it in a purifier. Then, take the thing to be tested, or its liquid, or its powder, and light it into the container. Looking at its changes, if there is a strange color, or the shape of precipitation, it is a sign of the test.

If the color turns blue and black, it is an image of sulfur in something. When sulfur meets lead acetate, it synthesizes a new substance, and the color is blue and black. Another example is if the precipitation is white and the texture is fine, or it shows that something contains chlorine. After reacting with lead acetate, it will form a white precipitation.

The method is also rigorous and delicate. Every step needs to be carefully observed, a little bit worse, a thousand miles away. The tester must be meticulous and skillful in his technique, in order to obtain accurate results. Among all kinds of techniques of testing objects, lead acetate test is really the key method. In order to distinguish objects, remove falsehoods and preserve the truth, and make an unparalleled contribution.