EC meter

An EC meter is a tool that helps you measure how much stuff is in water. Imagine you have a glass of water, and you want to know how much salt is in it. You can't see the salt, so you use the EC meter to help you find out.

The EC meter works by sending a little electric shock through the water. This shock is too small for you to feel, but it can detect how the water conducts electricity. Salt and other things in the water make it conduct electricity differently.

So, when the EC meter sends the little shock, it can tell how much salt is in the water by how well the water conducts electricity. It tells you the result on a little screen, so you can see the number of how much salt (or other things) are in the water.

The EC meter is helpful for farmers, because they need to know how much stuff is in their soil and water to grow healthy crops. It's also useful for aquarium owners, because they need to make sure the water is healthy for their fish. Without the EC meter, it would be impossible to know how much stuff is in the water, and that could cause big problems!