100 Tablets 7 in 1 pH Test Aquarium Water Tropical Fish Tank Pond Water Test Strips The most suitable environment for fish is a weakly alkaline environment. Freshwater culture generally requires 6.5-8.5, and the most suitable range is between 7.5-8. A pH value that is too high or too low is not conducive to fish growth. If the pH value is below 4.4, fish mortality can be as high as 7% to 20%. When the pH value is higher than 10.4, the mortality rate can be as high as 20% to 85%. When the pH value is higher than 10.6, it can lead to total death. When the pH is only lower than 6.5, the oxygen-carrying capacity of the animal's blood will decrease, leading to physiological hypoxia, decreased metabolic function, decreased immune function; respiratory capacity and mass mortality. Storage conditions and validity period: 1. Product validity period: Stored in a dry and dark place, the validity period is 24 months. 2. Validity period after opening the bottle: After opening the bottle, the bottle cap should be sealed and stored in a dry and dark place. Validity period is 90 days. Packing list: 100 sheets/set x water quality test paper Test Methods: 1. Immerse the reaction area of the test strip into the solution to be tested for 1-2 seconds, then take out the test strip and let the excess water drain away. 2. After 30 seconds, compare the reaction area of the test strip with the color of the color card to determine the test value of the solution to be tested. 3. The colorimetric time should be controlled at about 60 seconds. Too long or too short time will affect the measurement. scope: Accuracy: 96% Shelf life: 2 years Material: polyester fiber Test time: 30 seconds Advantages: Anti-VC interference ability Test elements: total hardness, alkali, cyanuric acid, nitrate, nitrite, residual chlorine, pH Scope of application: Suitable for fish ponds, aquariums, aquaculture, etc. Precaution: 1. When taking out the test strip, do not touch the reaction end of the test strip to avoid contaminating the test strip and affecting the test results. 2. After taking out the required number of test strips, seal the remaining test strips and store them away from light. 3. The liquid to be tested should be kept colorless or light-colored as much as possible. Before testing, liquids that are too dark in color can be dehydrated by activated carbon adsorption. If the liquid to be tested is turbid, it can be allowed to stand for a period of time. After settling, take the transparent part for testing.