The quick and accurate way to test both nitrite and nitrate. This kit reads nitrite from 0-10 ppm and nitrate from 0-200 ppm. Desiccant-lined tube, with snap-tight cap, provides maximum moisture protection for accurate results. Highly precise color charts Dip directly into aquarium – no separate vial needed Includes information on how to correct unsafe water conditions 25 strips For fresh and salt water