Use Enzyme-based Environmental Nitrate Test Kits (E-NTK) for accurate results below ten (10.0) ppm.  Safe and Environmentally Benign.

Use to test for nitrates in: water, salt water, rivers, lakes, streams, wells; non-point source runoff from the over-application of nitrogen fertilizers; point-sources such as Concentrated Animal Feeding; point-sources from poorly or untreated human sewage; and nitrate-containing wastes produced by many industrial processes, including paper and munitions manufacturing.