AquaApex 7-in-1 Aquarium Test Kit, 100 Test Strips, for Freshwater & Saltwater Fish Tanks and Ponds. Accurately Tests Nitrate, Nitrite, Chlorine, Total Hardness, Alkalinity, Carbonate Hardness and pH

[25-Strip Packs for Freshness] Test strips come in packs of 25, reducing freshness loss by 50%. The aluminum foil bags are 30% thicker to minimize light exposure and air contact. Each bag features a reusable zip seal for convenience. Keeping strips fresh is key for accurate testing since some ingredients are activated [High-Sensitivity Hydrophilic Formula] The advanced hydrophilic formula allows the strips to quickly absorb samples in 3 seconds. The color pad reacts swiftly and accurately when detecting small impurities. This formula ensures even, vibrant colors for precise comparison with the color chart [Innovative Packaging Design] The packaging includes a test tube holder and base for easier testing. Use the test tube to collect samples, avoiding direct immersion of the strips in the aquarium to ensure accuracy. Place the test tube in the base during testing, and return it to the holder afterward. The design considers the needs for transportation, use, and storage [Precise Color Chart for Easy Comparison] The aluminum foil bags feature four-color printing to ensure accurate comparison between the color chart and the test strips. Directly printed color charts resist fading and damage during transport, use, and storage. The accuracy of the test strips depends on factors such as freshness, packaging integrity, testing process, and storage conditions [7-IN-1 Test Kit] Includes 100 7-IN-1 test strips with precise and reliable performance. The kit covers tests for NO3, NO2, Cl2, GH, TAL, KH, and pH. It meets your daily maintenance and management needs for aquariums and fish tanks. If you have any questions while using the product, please feel free to contact us, and your inquiries will definitely receive a satisfactory response