| http://www.w3.org/ns/prov#value | - Also, you need some sort of indicator so you know when the production of perch stars (for this you need a 1g/l solution of Methylene blue), you also need an indicator to show you how much chlorate remains in solution (obviously this is not an accurate system but it will show you when the levels are high or low by the intensity of the precitipate, as these tests are pretty sensitive you will be able
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