Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
I need to determine the amount of chlorine in a swimming pool. How do I get started? What kind of experiment would I need to carry out?
What equipment would I need for this experiment?
If you need a no-frills solution, get some quick-test paper, such as this.
A slightly more complex solution would be a test kit like this, which makes use of the formation of Bandrowski's base from 1,4-phenylenediamine in the presence of oxidants, such as chlorine.