Product Introduction: Nitrite (NO2-) measurement test paper (for freshwater and saltwater); Quickly check PH values. Simply dip the test paper into the water and check the PH value quickly. ● All aquatic creatures such as fish, aquatic grass, sea grass and microorganisms are highly sensitive to the significant changes in PH value and is important to breed in aquariums water with the PH value suitable for each one. Raw Materials/Composition: Test paper for water quality measurement; How to use: 1. Soak the pad part of the NO2 in water for about 1 second. 2. Wait about 30-60 seconds. 3. Instantly contrast the colored pad with the included color paper. (The color will darken over time. Caution (Disclaimer) > Please be sure to read the legal precautions. The raw materials and country of origin are subject to change, so please check with the packaging. Packaging may change without prior notice. Please acknowledge Continue
Water quality test paper