400Pcs/5Books Professional 1-14 Ph Litmus Paper Ph Test Strips Water Cosmetics Soil Acidity Test Strips With Control Card

Features: 1. Take one strip and immerse it into the solution you would like to measure. The color of the strip will change immediately. 2. Quickly match this color against the color chart to obtain the pH in 15 seconds. Do not wait or let the strip dry. 3. The number next to the color on the chart is your pH. (1 - 3 indicates a very acidic substance; 4 - 6 indicates an acidic substance; 7 indicates neutral; 8 - 11 indicates alkalinity and 12 - 14 indicates a very high level of alkalinity) 4. This pH tester can not indicate the Acid or alkali solution when its density was lower than 0.01. 5. Keep it in a dry place and away from direct sunlight. Specification: 100 brand new quality Item Name:PH Test Strips Material:Paper Color:as the picture Size:7cm/2.76inch*4.5cm/1.77inch Package includes: 400pcs/5books PH Test Strips Note: 1. Please note that the photo does not show actual size, please refer to Description for size details. 2. Please allow differences due to manual measurement, thanks. 3. Due to the difference between different monitors, the image may not reflect the actual color of the item. The merchant warrants that their products comply with all applicable laws, and are offered only if they comply with Joom's policies and EU Product Safety and Compliance laws.