Macherey-Nagel Quantofix Nitrate/Nitrite Test Strips provide a fast and reliable method for detecting nitrate and nitrite in pool water and other liquids. With a simple dip-and-read procedure, results are available in less than 70 seconds and can be evaluated visually with the color scale or digitally using the Quantofix Relax strip reader. Ideal for dairies, vegetable production, and drinking water monitoring, these strips offer a quick, simple, and precise solution for nitrate and nitrite determination.