Where can i buy an chlorine test kit

I'm doing an science project on which brand of bottled water has the most chlorine in it and to do that, I have to get an chlorine test kit. Does anyone know where I can get one for kids and is not too costy? Thanks

You can get the kits at pool or aquarium stores, but there is a problem. Chlorine is not used for bottled water, ozone is used (or nothing). Any chlorine in the source water is removed. If you found chlorine, it would be a mistake and at a much lower level than a test kit can detect.

Pool store... walmart. Your choice

pool store