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Quick test for determining nitrate levels in freshwater/seawater aquariums and ponds Determination of the nitrate value for optimal plant growth or possible cause of algae in fresh and sea water Laboratory comparator system to compensate for the inherent coloring of water: Fill glass cuvettes with sample water, add reagents to a cuvette, place cuvettes in holders, read values on color card Application: When setting up fresh water: once a week. When setting up new sea water: once a week. For green algae problems On the JBL homepage in the aquarium or pond theme world you will find detailed information about water analyzes and problem solutions Scope of delivery: 1 nitrate test for approx. 40 measurements incl. 2 reagents, 2 glass cuvettes with screw caps, syringe, measuring spoon, compara.