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3-in-1 pool test kit: pool test paper can test all the necessary parameters of your swimming pool, such as pH value, total hardness and chlorine. This allows you to monitor the water quality at any time. Store in a cool, dry place: please read our pool and spa test strip in natural light for excellent results, and store in a cool, dry place. It is convenient for you. USE THE MOST RELIABLE TEST PAPER Our water quality test kit has been focusing on the field of testing and measurement for many years, and can ensure the accuracy of testing water quality. Convenient to Use The water test strip is easy to use, and you can take a glass of pool water sample, immerse the pool test strip for 2 seconds, and then wait 60 seconds to read the pool test strip with the color card. Widely Used The pool test strip can be used for a variety of water quality tests, e.g. For swimming pools, hot tubs, spas, ponds, aquariums, water industry waste, etc. › See more product details; Product description Description: Pool test paper can test all necessary parameters of your swimming pool such as pH, total hardness and chlorine. It is suitable for swimming pools, hot tubs, spas, ponds, aquariums, water industry waste, etc. Specification: Size: approx. 9.5 cm / 3.74 inches. Material: PP + paper. Weight: approx. 50 g. Packing list: Pool test paper x 50 pieces/bottle. Notes: 1. Due to the different display and light effects, the actual colour of the product may be slightly different from the colour shown in the picture. 2. Please allow for a 1-3 cm margin of error due to manual measurement.; Product description Description: Pool test paper can test all necessary parameters of your swimming pool such as pH, total hardness and chlorine. It is suitable for swimming pools, hot tubs, spas, ponds, aquariums, water industry waste, etc. Specification: Size: approx. 9.5 cm / 3.74 inches. Material: PP + paper. Weight: approx. 50 g. Packing list: Pool test paper x 50 pieces/bottle. Notes: 1. Due to the different display and light effects, the actual colour of the product may be slightly different from the colour shown in the picture. 2. Please allow for a 1-3 cm margin of error due to manual measurement.; Description: Pool test paper can test all necessary parameters of your swimming pool such as pH, total hardness and chlorine. It is suitable for swimming pools, hot tubs, spas, ponds, aquariums, water industry waste, etc. Specification: Size: approx. 9.5 cm / 3.74 inches. Material: PP + paper. Weight: approx. 50 g. Packing list: Pool test paper x 50 pieces/bottle. Notes: 1. Due to the different display and light effects, the actual colour of the product may be slightly different from the colour shown in the picture. 2. Please allow for a 1-3 cm margin of error due to manual measurement.