G017: Measuring chemical concentrations in water

To ensure that water is safe to drink, it is important to eliminate any harmful micro-organisms that may be present in the water. It is important too, to limit the concentrations of chemicals that could also be present in the water. This guide is a transcript of the WEDC film of the same title from http://wedc.lu/measuring-chemical-concentrations-in-water. The film looks at how chemicals in water can be measured, using chlorine, nitrate and iron as examples.