The Insta-Test nitrate test strips measure nitrate levels from 0, 10, 30, 60, 120, 200 ppm. The nitrate test is a dip-n-read strip with results in 60 seconds. The bottle includes 25 strips packaged in a waterproof PopTop bottle with a tri-lingual (English, Spanish, French) instruction label. The PopTop bottle has a molded desiccant liner, which protects the strips from moisture and UV light.