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Prices, terms, and availability may vary online, in stores, and in–app. If the advertised price is not shown here, inventory at the advertised price may now be sold out. Please see the other offers, if available, while quantities last. Some items may be available from Marketplace Sellers, who set their own prices, and are not eligible for price match. Items sold in store by Walmart may be eligible for a price match to online items shipped and sold by Walmart. For variable weight items, price shown is an estimated price only – you will be charged for the actual weight of the item. See our

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Hardness 7in1 Water Quality Test Paper Drinking Water Test Strips Water Hardness Test Strips

<ul><li>With this paper, you can control 7 values ​​that are crucial for water quality: pH acidity, total alkalinity, hardness, bromine, NO2 nitrite, NO3 nitrate and total chlorine</li><li>These values ​​determine how healthy your aquarium is. Abnormal values ​​can cause problems</li><li>water quality is essential for the fish and plants in your aquarium</li><li>Regular testing of water quality values ​​helps ensure that fish live healthy and happy lives</li></ul>

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Specification: Material: PET time: 60s Shelf life: 2 years Certification: FDA, CE, ISO items: PH, total alkali, nitrite, residual chlorine, total chlorine, hardness, bromine Scope of application: drinking water, aquarium, swimming pool, , industrial water, pond, hot spring Testing method: 1. Open the , remove a strip of paper, and immediately close the . 2. Immerse the area of ​​the strip in the solution to be tested for 1-2 seconds, remove the strip, and dip the excess water with paper. 3. After 1 minute, compare the color of the area of ​​the strip with the color chart to determine the value of the solution to be tested. 4. The colorimetric time is optimally controlled at 60s, too long / short time will affect the reading. Precautions: 1. Do not touch the end of the paper when removing the paper to avoid contaminating the paper and affecting the results. 2. After removing the required number of strips, store the remaining strips in a sealed and dark place. 3. The liquid to be tested should be kept as colorless or light-colored as possible. Before the liquid with too dark color is detected, it can be dehydrated by adsorption with activated carbon. If the liquid to be tested is turbid, let it stand for a while, and then take the clear part for detection after settling. Package List: Water quality paper x 50

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