Physio-chemical water quality

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Hello everyone!

 

For a dissertation for biology, I've decided to perform a water quality test (apart from the usual biotic life; micro-invertebrats etc.).

 

I'd like to know if there's a way to indicate (and the amount of; just indicating the presence won't give us information on the quality of the water...):

• Phosphate
• Ammonium
• Nitrate
• Nitrite
• Concentration of dissolved oxygen

Thanks!

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Auto-answered: my science (chemistry and physics) teacher (is this a correct term in English? I speak Dutch..) has some test sets to get the information I required.