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320x pH Indicator Test Strips 1-14 Laboratory Paper Litmus Tester Urine Saliva

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pH Indicator Test Strips 1-14 Laboratory Paper Litmus Tester Urine Saliva US Seller - FREE SHIPPING via USPS First Class with Tracking Number Description: There is a strong correlation between the pH of the body's internal environment and pH paper help you to maintain good healthy body by testing many usual everyday substances, including moisturized soap, lemon juice, milk, liquid detergent, moisturized soil, saliva, urine, sweat...etc. The scale reads from 1 to 14: 1 - 3 indicates a very acidic substance 4 - 6 indicates an acidic substance 7 indicates neutral 8 - 11 indicates alkalinity 12 - 14 indicate a very high level of alkalinity. PH 1-14 color chart in each pack. The test strip color changes must be matched with the pH scale color chart within about 15 seconds. Size: 7cm x 4.5cm/2.8 x 1.8 inch Packing List: - 2 books containing 160 strips (Colour charts included) - 4 books containing 320 strips (Colour charts included)