Note: Do not usewet hands to take the test strips out of the bottle. Did you face theseproblems about your pet fish—lethargic, sudden death, loss of appetite, loss ofbalance, even the water seemed to be clean? However, the problems with thewater are not visible to the naked eyes. That's why we need aquarium teststrips to get a deep insight into the water. Luxbird aquarium 7 in 1 test strips are designed for testing water quality of aquariums and fish tanks. You can check the quality level of 7 kinds of parameter on one strip -- Hardness, Nitrate, Nitrite, Cl2, Total Alkalinity,Carbonate, and PH. By only 3 steps, you could clearly acknowledge the water quality and take preventive actions to provide an optimal environment for yourpet fish. Main Features Aquarium 7 in 1 test strips, 100 pieces, 100 times of testing Premium fiber paper, no leaking, no bleeding Only 3 steps, to get insightful knowledge about the water quality Clear color chart, to check all parameters at one glance Easy to use, easy to store Ideal for testing the water quality of aquariums, fish tanks, andponds PARAMETERS Brand: LUXBIRD Product Name: Aquarium 7 In 1 Test Strips Material: Premium Fiber Test Time: 60 seconds Quantity: 100 Pieces PACKAGE CONTENTS 7 In 1 Water TestStrip*100 Pieces Plastic TestTube*1