This is how you can measure the light through water.

This tells you how to measure ammonia.

This website tells you what ammonia is, how it's used, how people can be exposed to ammonia, ammonia's mechanism of action, immediate health effects of ammonia exposure, and ammonia exposure treated.

This website tell you what ammonia is and how it is used.

This website tells you what and how ammonia affects your body.

This website tells you some facts on ammonia like how it enters the water, what ammonia is, and recommended water quality criteria for ammonia.

This website tells you what ammonia is and how you can be effected by it