API Nitrite Test Kit

Tests for nitrite in freshwater & saltwater aquariums. Nitrite, toxic to fish, is produced by nitrifying bacteria in the biological filter as it breaks down ammonia. 180 tests per kit. ADDITIONAL FEATURES Product Gross Weight: 0.1500 lb Product Net Weight: 0.1500 lb Product Height: 5.13 in Product Length: 1.50 in Product Width: 2.38 in INSTRUCTIONS Use Instructions: To remove childproof safety cap: With one hand, push red tab left with thumb while unscrewing cap with free hand.1. Fill a clean test tube with 5 ml of water to be tested (to the line on the tube).2. Add 5 drops of Nitrite Test Solution, holding dropper bottle upside down in a completely vertical position to assure uniformity of drops.3. Cap the test tube and shake for 5 seconds.4. Walt 5 minutes for the color to develop.5. Reed the test results by compering the color of the solution to the Nitrite Color Card. The tube should be viewed in a well-lit area against the white area of the card. The closest match indicates the ppm (mg/L) of nitrite in the water sample. Rinse the test tube with clean water otter use. SAFETY Caution: Keep out of reach of children